2603 Articles aux enchères et des galeries:

mechanical movement

TIFFANY & CO., BIRD ON A ROCK MECHANICAL PENDANT WATCHTIFFANY & CO., BIRD ON A ROCK MECHANICAL PENDANT WATCH
Lot 43 TIFFANY & CO., BIRD ON A ROCK MECHANICAL PENDANT WATCH Only Watch CHRISTIE'S
CHF 350 000
HARRY WINSTON & ANDREAS STREHLER, OPUS 7, A UNIQUE GOLD, DIAMOND AND SAPPHIRE-SET WRISTWATCH WITH SEMI-SKELETONISED MOVEMENTHARRY WINSTON & ANDREAS STREHLER, OPUS 7, A UNIQUE GOLD, DIAMOND AND SAPPHIRE-SET WRISTWATCH WITH SEMI-SKELETONISED MOVEMENT
Lot 5 HARRY WINSTON & ANDREAS STREHLER, OPUS 7, A UNIQUE GOLD, DIAMOND AND SAPPHIRE-SET WRISTWATCH WITH SEMI-SKELETONISED MOVEMENT Harry Winston Watches Online: The Dubai Edit CHRISTIE'S
$ 280 000
CHRISTOPHE CLARET, UNIQUE PIECE PINK GOLD TOURBILLON MONOPUSHER CHRONOGRAPH WITH STRIKING MECHANISM 'DUALTOW'CHRISTOPHE CLARET, UNIQUE PIECE PINK GOLD TOURBILLON MONOPUSHER CHRONOGRAPH WITH STRIKING MECHANISM 'DUALTOW'
Lot 211 CHRISTOPHE CLARET, UNIQUE PIECE PINK GOLD TOURBILLON MONOPUSHER CHRONOGRAPH WITH STRIKING MECHANISM 'DUALTOW' Christophe Claret Watches Online: The Geneva Edit CHRISTIE'S
CHF 52 920 Vendu
CHRISTOPHE CLARET, UNIQUE PIECE PVD COATED TITANIUM TOURBILLON MONOPUSHER CHRONOGRAPH WITH STRIKING MECHANISM 'DUALTOW NIGHTEAGLE'CHRISTOPHE CLARET, UNIQUE PIECE PVD COATED TITANIUM TOURBILLON MONOPUSHER CHRONOGRAPH WITH STRIKING MECHANISM 'DUALTOW NIGHTEAGLE'
Lot 212 CHRISTOPHE CLARET, UNIQUE PIECE PVD COATED TITANIUM TOURBILLON MONOPUSHER CHRONOGRAPH WITH STRIKING MECHANISM 'DUALTOW NIGHTEAGLE' Christophe Claret Watches Online: The Geneva Edit CHRISTIE'S
CHF 44 100 Vendu
F. P. JOURNE, AN EARLY PLATINUM CHRONOMÈTRE À RÉSONANCE WITH BRASS MOVEMENT F. P. JOURNE, AN EARLY PLATINUM CHRONOMÈTRE À RÉSONANCE WITH BRASS MOVEMENT
Lot 43 F. P. JOURNE, AN EARLY PLATINUM CHRONOMÈTRE À RÉSONANCE WITH BRASS MOVEMENT F.P. Journe Montres en ligne: Dubaï Modifier CHRISTIE'S
$ 275 000 Vendu
PATEK PHILIPPE, ELECTRO-MECHANICAL AND SOLAR-POWERED GILT BRASS AND GREEN LEATHER TABLE CLOCK WITH APPLIED GILT ORNAMENTS "COMMERCE ET INDUSTRIE" AND ORIGINAL FITTED BOX, REF. 714PATEK PHILIPPE, ELECTRO-MECHANICAL AND SOLAR-POWERED GILT BRASS AND GREEN LEATHER TABLE CLOCK WITH APPLIED GILT ORNAMENTS "COMMERCE ET INDUSTRIE" AND ORIGINAL FITTED BOX, REF. 714
Lot 60 PATEK PHILIPPE, ELECTRO-MECHANICAL AND SOLAR-POWERED GILT BRASS AND GREEN LEATHER TABLE CLOCK WITH APPLIED GILT ORNAMENTS "COMMERCE ET INDUSTRIE" AND ORIGINAL FITTED BOX, REF. 714 Patek Philippe Montres rares New York: en ligne CHRISTIE'S
$ 52 500 Vendu
MAGNO, PAIR OF SILVER AND ENAMEL HUNTER CASE KEYLESS LEVER PRESENTATION WATCHES WITH CONSECUTIVE MOVEMENT NUMBERS AND ORIGINAL BOX, MADE TO CELEBRATE THE LOYALTY OF TAIWAN TO SUN YAT-SENMAGNO, PAIR OF SILVER AND ENAMEL HUNTER CASE KEYLESS LEVER PRESENTATION WATCHES WITH CONSECUTIVE MOVEMENT NUMBERS AND ORIGINAL BOX, MADE TO CELEBRATE THE LOYALTY OF TAIWAN TO SUN YAT-SEN
Lot 61 MAGNO, PAIR OF SILVER AND ENAMEL HUNTER CASE KEYLESS LEVER PRESENTATION WATCHES WITH CONSECUTIVE MOVEMENT NUMBERS AND ORIGINAL BOX, MADE TO CELEBRATE THE LOYALTY OF TAIWAN TO SUN YAT-SEN Montres rares New York: en ligne CHRISTIE'S
$ 10 000
A. LANGE & SÖHNE. A RARE AND ATTRACTIVE 18K PINK GOLD TOURBILLON WRISTWATCH WITH CHAIN FUSÉE PATENTED STOP SECONDS MECHANISM AND REGULATOR DIAL WITH PIVOTED SEGMENTA. LANGE & SÖHNE. A RARE AND ATTRACTIVE 18K PINK GOLD TOURBILLON WRISTWATCH WITH CHAIN FUSÉE PATENTED STOP SECONDS MECHANISM AND REGULATOR DIAL WITH PIVOTED SEGMENT
Lot 52 A. LANGE & SÖHNE. A RARE AND ATTRACTIVE 18K PINK GOLD TOURBILLON WRISTWATCH WITH CHAIN FUSÉE PATENTED STOP SECONDS MECHANISM AND REGULATOR DIAL WITH PIVOTED SEGMENT A. Lange & Söhne Rare Watches : Featuring The Kairos Collection Part I CHRISTIE'S
CHF 100 800 Vendu
A. LANGE & SÖHNE. A RARE AND ATTRACTIVE 18K PINK GOLD TOURBILLON WRISTWATCH WITH CHAIN FUSÉE PATENTED STOP SECONDS MECHANISM AND REGULATOR DIAL WITH PIVOTED SEGMENTA. LANGE & SÖHNE. A RARE AND ATTRACTIVE 18K PINK GOLD TOURBILLON WRISTWATCH WITH CHAIN FUSÉE PATENTED STOP SECONDS MECHANISM AND REGULATOR DIAL WITH PIVOTED SEGMENT
Lot 2070 A. LANGE & SÖHNE. A RARE AND ATTRACTIVE 18K PINK GOLD TOURBILLON WRISTWATCH WITH CHAIN FUSÉE PATENTED STOP SECONDS MECHANISM AND REGULATOR DIAL WITH PIVOTED SEGMENT A. Lange & Söhne Passion for Time - An Important Private Collection of Watches and Timepieces CHRISTIE'S
CHF 113 400 Vendu
F.P. JOURNE. AN EARLY AND VERY RARE PLATINUM AUTOMATIC FLYBACK CHRONOGRAPH WRISTWATCH WITH BRASS MOVEMENT AND DATEF.P. JOURNE. AN EARLY AND VERY RARE PLATINUM AUTOMATIC FLYBACK CHRONOGRAPH WRISTWATCH WITH BRASS MOVEMENT AND DATE
Lot 2034 F.P. JOURNE. AN EARLY AND VERY RARE PLATINUM AUTOMATIC FLYBACK CHRONOGRAPH WRISTWATCH WITH BRASS MOVEMENT AND DATE F.P. Journe The Art of F. P. Journe CHRISTIE'S
CHF 239 400 Vendu
F.P. JOURNE. AN EARLY AND ATTRACTIVE PLATINUM AUTOMATIC WRISTWATCH WITH BRASS MOVEMENT, DATE AND POWER RESERVEF.P. JOURNE. AN EARLY AND ATTRACTIVE PLATINUM AUTOMATIC WRISTWATCH WITH BRASS MOVEMENT, DATE AND POWER RESERVE
Lot 2023 F.P. JOURNE. AN EARLY AND ATTRACTIVE PLATINUM AUTOMATIC WRISTWATCH WITH BRASS MOVEMENT, DATE AND POWER RESERVE F.P. Journe The Art of F. P. Journe CHRISTIE'S
CHF 113 400 Vendu
F.P. JOURNE. AN EARLY AND ATTRACTIVE 18K PINK GOLD AUTOMATIC WRISTWATCH WITH BRASS MOVEMENT, DATE AND POWER RESERVEF.P. JOURNE. AN EARLY AND ATTRACTIVE 18K PINK GOLD AUTOMATIC WRISTWATCH WITH BRASS MOVEMENT, DATE AND POWER RESERVE
Lot 2009 F.P. JOURNE. AN EARLY AND ATTRACTIVE 18K PINK GOLD AUTOMATIC WRISTWATCH WITH BRASS MOVEMENT, DATE AND POWER RESERVE F.P. Journe The Art of F. P. Journe CHRISTIE'S
CHF 94 500 Vendu
F.P. JOURNE. A RARE AND ATTRACTIVE 18K PINK GOLD AUTOMATIC WRISTWATCH WITH BRASS MOVEMENT, MOON PHASES, DATE AND POWER RESERVEF.P. JOURNE. A RARE AND ATTRACTIVE 18K PINK GOLD AUTOMATIC WRISTWATCH WITH BRASS MOVEMENT, MOON PHASES, DATE AND POWER RESERVE
Lot 2016 F.P. JOURNE. A RARE AND ATTRACTIVE 18K PINK GOLD AUTOMATIC WRISTWATCH WITH BRASS MOVEMENT, MOON PHASES, DATE AND POWER RESERVE F.P. Journe The Art of F. P. Journe CHRISTIE'S
CHF 126 000 Vendu
F.P. JOURNE. AN EARLY AND RARE PLATINUM AUTOMATIC ANNUAL CALENDAR WRISTWATCH WITH RETROGRADE DATE AND BRASS MOVEMENTF.P. JOURNE. AN EARLY AND RARE PLATINUM AUTOMATIC ANNUAL CALENDAR WRISTWATCH WITH RETROGRADE DATE AND BRASS MOVEMENT
Lot 2033 F.P. JOURNE. AN EARLY AND RARE PLATINUM AUTOMATIC ANNUAL CALENDAR WRISTWATCH WITH RETROGRADE DATE AND BRASS MOVEMENT F.P. Journe The Art of F. P. Journe CHRISTIE'S
CHF 214 200 Vendu
F.P. JOURNE. AN EARLY AND ATTRACTIVE 18K PINK GOLD AUTOMATIC WRISTWATCH WITH BRASS MOVEMENT, DATE AND POWER RESERVEF.P. JOURNE. AN EARLY AND ATTRACTIVE 18K PINK GOLD AUTOMATIC WRISTWATCH WITH BRASS MOVEMENT, DATE AND POWER RESERVE
Lot 49 F.P. JOURNE. AN EARLY AND ATTRACTIVE 18K PINK GOLD AUTOMATIC WRISTWATCH WITH BRASS MOVEMENT, DATE AND POWER RESERVE F.P. Journe Rare Watches CHRISTIE'S
CHF 81 900 Vendu
F.P. JOURNE. AN EXTREMELY RARE AND EARLY 18K PINK GOLD AUTOMATIC FLYBACK CHRONOGRAPH WRISTWATCH WITH BRASS MOVEMENT AND DATEF.P. JOURNE. AN EXTREMELY RARE AND EARLY 18K PINK GOLD AUTOMATIC FLYBACK CHRONOGRAPH WRISTWATCH WITH BRASS MOVEMENT AND DATE
Lot 2094 F.P. JOURNE. AN EXTREMELY RARE AND EARLY 18K PINK GOLD AUTOMATIC FLYBACK CHRONOGRAPH WRISTWATCH WITH BRASS MOVEMENT AND DATE F.P. Journe Passion for Time - An Important Private Collection of Watches and Timepieces CHRISTIE'S
CHF 252 000 Vendu
F.P. JOURNE. A VERY RARE AND EARLY PLATINUM CHRONOMETER WRISTWATCH WITH RESONANCE-CONTROLLED TWIN INDEPENDENT GEAR-TRAIN BRASS MOVEMENT AND POWER RESERVEF.P. JOURNE. A VERY RARE AND EARLY PLATINUM CHRONOMETER WRISTWATCH WITH RESONANCE-CONTROLLED TWIN INDEPENDENT GEAR-TRAIN BRASS MOVEMENT AND POWER RESERVE
Lot 2095 F.P. JOURNE. A VERY RARE AND EARLY PLATINUM CHRONOMETER WRISTWATCH WITH RESONANCE-CONTROLLED TWIN INDEPENDENT GEAR-TRAIN BRASS MOVEMENT AND POWER RESERVE F.P. Journe Passion for Time - An Important Private Collection of Watches and Timepieces CHRISTIE'S
CHF 415 800 Vendu
F. P. JOURNE, AN EARLY PLATINUM OCTA RÉSERVE DE MARCHE WITH BRASS MOVEMENTF. P. JOURNE, AN EARLY PLATINUM OCTA RÉSERVE DE MARCHE WITH BRASS MOVEMENT
Lot 42 F. P. JOURNE, AN EARLY PLATINUM OCTA RÉSERVE DE MARCHE WITH BRASS MOVEMENT F.P. Journe Montres en ligne: Dubaï Modifier CHRISTIE'S
$ 137 500 Vendu
CARTIER, A GOLD SLIDING ART DECO PURSE WATCH WITH IWC MOVEMENTCARTIER, A GOLD SLIDING ART DECO PURSE WATCH WITH IWC MOVEMENT
Lot 118 CARTIER, A GOLD SLIDING ART DECO PURSE WATCH WITH IWC MOVEMENT Montres en ligne: Dubaï Modifier CHRISTIE'S
$ 7 500 Vendu
F.P. JOURNE. A VERY RARE AND HIGHLY DESIRABLE STAINLESS STEEL LIMITED EDITION CHRONOMETER WRISTWATCH WITH RESONANCE-CONTROLLED TWIN INDEPENDENT GEAR-TRAIN MOVEMENT AND POWER RESERVEF.P. JOURNE. A VERY RARE AND HIGHLY DESIRABLE STAINLESS STEEL LIMITED EDITION CHRONOMETER WRISTWATCH WITH RESONANCE-CONTROLLED TWIN INDEPENDENT GEAR-TRAIN MOVEMENT AND POWER RESERVE
Lot 2020 F.P. JOURNE. A VERY RARE AND HIGHLY DESIRABLE STAINLESS STEEL LIMITED EDITION CHRONOMETER WRISTWATCH WITH RESONANCE-CONTROLLED TWIN INDEPENDENT GEAR-TRAIN MOVEMENT AND POWER RESERVE F.P. Journe The Art of F. P. Journe CHRISTIE'S
CHF 252 000 Vendu
F.P. JOURNE. AN EXCEEDINGLY RARE AND EARLY PLATINUM CHRONOMETER WRISTWATCH WITH RESONANCE-CONTROLLED TWIN INDEPENDENT GEAR-TRAIN BRASS MOVEMENT, PINK GOLD DIAL AND POWER RESERVEF.P. JOURNE. AN EXCEEDINGLY RARE AND EARLY PLATINUM CHRONOMETER WRISTWATCH WITH RESONANCE-CONTROLLED TWIN INDEPENDENT GEAR-TRAIN BRASS MOVEMENT, PINK GOLD DIAL AND POWER RESERVE
Lot 2038 F.P. JOURNE. AN EXCEEDINGLY RARE AND EARLY PLATINUM CHRONOMETER WRISTWATCH WITH RESONANCE-CONTROLLED TWIN INDEPENDENT GEAR-TRAIN BRASS MOVEMENT, PINK GOLD DIAL AND POWER RESERVE F.P. Journe The Art of F. P. Journe CHRISTIE'S
CHF 1 376 000 Vendu
F.P. JOURNE. AN INNOVATIVE AND RARE 18K PINK GOLD CHRONOMETER WRISTWATCH WITH RESONANCE-CONTROLLED TWIN INDEPENDENT GEAR-TRAIN MOVEMENT, POWER RESERVE AND 24H INDICATIONF.P. JOURNE. AN INNOVATIVE AND RARE 18K PINK GOLD CHRONOMETER WRISTWATCH WITH RESONANCE-CONTROLLED TWIN INDEPENDENT GEAR-TRAIN MOVEMENT, POWER RESERVE AND 24H INDICATION
Lot 2018 F.P. JOURNE. AN INNOVATIVE AND RARE 18K PINK GOLD CHRONOMETER WRISTWATCH WITH RESONANCE-CONTROLLED TWIN INDEPENDENT GEAR-TRAIN MOVEMENT, POWER RESERVE AND 24H INDICATION F.P. Journe The Art of F. P. Journe CHRISTIE'S
CHF 214 200 Vendu
F.P. JOURNE. AN EXCLUSIVELY RARE 18K PINK GOLD CHRONOMETER WRISTWATCH WITH RESONANCE-CONTROLLED TWIN INDEPENDENT GEAR-TRAIN MOVEMENT, 24-HOUR TIME DISPLAY, POWER RESERVE AND BLACK DIALF.P. JOURNE. AN EXCLUSIVELY RARE 18K PINK GOLD CHRONOMETER WRISTWATCH WITH RESONANCE-CONTROLLED TWIN INDEPENDENT GEAR-TRAIN MOVEMENT, 24-HOUR TIME DISPLAY, POWER RESERVE AND BLACK DIAL
Lot 2022 F.P. JOURNE. AN EXCLUSIVELY RARE 18K PINK GOLD CHRONOMETER WRISTWATCH WITH RESONANCE-CONTROLLED TWIN INDEPENDENT GEAR-TRAIN MOVEMENT, 24-HOUR TIME DISPLAY, POWER RESERVE AND BLACK DIAL F.P. Journe The Art of F. P. Journe CHRISTIE'S
CHF 340 200 Vendu
F.P. JOURNE. AN ATTRACTIVE AND SOUGHT AFTER 18K PINK GOLD CHRONOMETER WRISTWATCH WITH RESONANCE-CONTROLLED TWIN INDEPENDENT GEAR-TRAIN MOVEMENT AND POWER RESERVEF.P. JOURNE. AN ATTRACTIVE AND SOUGHT AFTER 18K PINK GOLD CHRONOMETER WRISTWATCH WITH RESONANCE-CONTROLLED TWIN INDEPENDENT GEAR-TRAIN MOVEMENT AND POWER RESERVE
Lot 2011 F.P. JOURNE. AN ATTRACTIVE AND SOUGHT AFTER 18K PINK GOLD CHRONOMETER WRISTWATCH WITH RESONANCE-CONTROLLED TWIN INDEPENDENT GEAR-TRAIN MOVEMENT AND POWER RESERVE F.P. Journe The Art of F. P. Journe CHRISTIE'S
CHF 226 800 Vendu
F.P. JOURNE. A VERY RARE AND EXCLUSIVE PLATINUM LIMITED EDITION TOURBILLON WRISTWATCH WITH POWER RESERVE, DEAD BEAT SECONDS, RUTHENIUM DIAL AND MOVEMENTF.P. JOURNE. A VERY RARE AND EXCLUSIVE PLATINUM LIMITED EDITION TOURBILLON WRISTWATCH WITH POWER RESERVE, DEAD BEAT SECONDS, RUTHENIUM DIAL AND MOVEMENT
Lot 96 F.P. JOURNE. A VERY RARE AND EXCLUSIVE PLATINUM LIMITED EDITION TOURBILLON WRISTWATCH WITH POWER RESERVE, DEAD BEAT SECONDS, RUTHENIUM DIAL AND MOVEMENT F.P. Journe Rare Watches CHRISTIE'S
CHF 529 200 Vendu
HARRY WINSTON & F.P. JOURNE. A DESIRABLE AND UNIQUE PLATINUM CHRONOMETER WRISTWATCH WITH RESONANCE-CONTROLLED TWIN INDEPENDENT GEAR-TRAIN MOVEMENT AND POWER RESERVE INDICATIONHARRY WINSTON & F.P. JOURNE. A DESIRABLE AND UNIQUE PLATINUM CHRONOMETER WRISTWATCH WITH RESONANCE-CONTROLLED TWIN INDEPENDENT GEAR-TRAIN MOVEMENT AND POWER RESERVE INDICATION
Lot 97 HARRY WINSTON & F.P. JOURNE. A DESIRABLE AND UNIQUE PLATINUM CHRONOMETER WRISTWATCH WITH RESONANCE-CONTROLLED TWIN INDEPENDENT GEAR-TRAIN MOVEMENT AND POWER RESERVE INDICATION Harry Winston Rare Watches CHRISTIE'S
CHF 252 000 Vendu
F.P. JOURNE. A VERY RARE AND EXCLUSIVE PLATINUM LIMITED EDITION AUTOMATIC ANNUAL CALENDAR WRISTWATCH WITH RETROGRADE DATE, RUTHENIUM DIAL AND MOVEMENTF.P. JOURNE. A VERY RARE AND EXCLUSIVE PLATINUM LIMITED EDITION AUTOMATIC ANNUAL CALENDAR WRISTWATCH WITH RETROGRADE DATE, RUTHENIUM DIAL AND MOVEMENT
Lot 95 F.P. JOURNE. A VERY RARE AND EXCLUSIVE PLATINUM LIMITED EDITION AUTOMATIC ANNUAL CALENDAR WRISTWATCH WITH RETROGRADE DATE, RUTHENIUM DIAL AND MOVEMENT F.P. Journe Rare Watches CHRISTIE'S
CHF 163 800 Vendu
F.P. JOURNE. AN EXCEEDINGLY RARE AND EARLY PLATINUM CHRONOMETER WRISTWATCH WITH RESONANCE-CONTROLLED TWIN INDEPENDENT GEAR-TRAIN BRASS MOVEMENT AND POWER RESERVEF.P. JOURNE. AN EXCEEDINGLY RARE AND EARLY PLATINUM CHRONOMETER WRISTWATCH WITH RESONANCE-CONTROLLED TWIN INDEPENDENT GEAR-TRAIN BRASS MOVEMENT AND POWER RESERVE
Lot 127 F.P. JOURNE. AN EXCEEDINGLY RARE AND EARLY PLATINUM CHRONOMETER WRISTWATCH WITH RESONANCE-CONTROLLED TWIN INDEPENDENT GEAR-TRAIN BRASS MOVEMENT AND POWER RESERVE F.P. Journe Rare Watches CHRISTIE'S
CHF 472 500 Vendu
F.P. JOURNE. AN ATTRACTIVE AND SOUGHT AFTER 18K PINK GOLD CHRONOMETER WRISTWATCH WITH RESONANCE-CONTROLLED TWIN INDEPENDENT GEAR-TRAIN MOVEMENT AND POWER RESERVEF.P. JOURNE. AN ATTRACTIVE AND SOUGHT AFTER 18K PINK GOLD CHRONOMETER WRISTWATCH WITH RESONANCE-CONTROLLED TWIN INDEPENDENT GEAR-TRAIN MOVEMENT AND POWER RESERVE
Lot 50 F.P. JOURNE. AN ATTRACTIVE AND SOUGHT AFTER 18K PINK GOLD CHRONOMETER WRISTWATCH WITH RESONANCE-CONTROLLED TWIN INDEPENDENT GEAR-TRAIN MOVEMENT AND POWER RESERVE F.P. Journe Rare Watches CHRISTIE'S
CHF 151 200 Vendu
F.P. JOURNE. A VERY RARE AND ATTRACTIVE PLATINUM LIMITED EDITION CHRONOMETER WRISTWATCH WITH RESONANCE-CONTROLLED TWIN INDEPENDENT GEAR-TRAIN MOVEMENT AND POWER RESERVEF.P. JOURNE. A VERY RARE AND ATTRACTIVE PLATINUM LIMITED EDITION CHRONOMETER WRISTWATCH WITH RESONANCE-CONTROLLED TWIN INDEPENDENT GEAR-TRAIN MOVEMENT AND POWER RESERVE
Lot 51 F.P. JOURNE. A VERY RARE AND ATTRACTIVE PLATINUM LIMITED EDITION CHRONOMETER WRISTWATCH WITH RESONANCE-CONTROLLED TWIN INDEPENDENT GEAR-TRAIN MOVEMENT AND POWER RESERVE F.P. Journe Rare Watches CHRISTIE'S
CHF 340 200 Vendu
×
Enregistrez cette requête et recevez des alertes par e-mail! C'est simple et très efficace.
mechanical movement
Créer un abonnement de recherche