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Informations: US Import Codes

Sources:
Kathleen H. Pritchard: Swiss Timepiece Makers 1775-1975, Phoenix Publishing
Movement photos from books and Journals
Movements of known origin
 
The code is assigned to the US importer. This can also be the US subsidiary of a foreign manufacturer. Often the importer is unknown, and only the brands imported under the particular code are listed. If known, firstly the importer and/or his brand is mentioned, followed by the imported products. As long as a code was watched on only one movement, importer and/or brands are written in italics.
To OverviewTo Overview
.
Code Manufacturer, Importer, Brand Code Manufacturer, Importer, Brand Code Manufacturer, Importer, Brand
AOC
Heuer, Mido, Roamer (Meyer & Stüdeli)
AOG
Ch. Aerni S.A.
AOH
Hamilton
AOI
Doxa
AOL
Adolph Schwartz & Son, Doxa
AON
Angelus SA
AOX
Alstate Watch Co., Alstater Watch Corp.
AWX
Pierpont Watch Co.
AXA
A. Wittnauer & Co.
AXF
Abercrombie & Fitch Co., Heuer
AXG
Avon Watch Co.
AXJ
A.R. & J.E. Meylan
Meylan Stop Watch Co.
AXP
Aristo, Ed. Kummer, Ebauche Bettlach, Juvenia
AXR
Mural Watch Co.
AXU
Paul Ditisheim S.A., Solvil & Titus
Lucien Piccard
AXZ
Alden, Benrus, Langendorf
AYP
Audemars Piguet
AZL
Aureole Watch Co.
BOL
Bernard S. Lipmann, Lemania, Octo, Vulcain
BOM
Berman Watch Co. Inc., Marc Nicolet, Juvenia
BOP
Robert Ronnel
BOW
Breitling Watch Corp.
BXC
Avia Degoumois & Cie., Ball Co.
BCD
Leonidas
BXJ
Midland, Oris
BXL
Lion, Midland, Mont Vernon,
BXM
Cardinal Watch Co.
BXN
Benrus
BXP
Bayer, Pretzfelder & Mills, Glycine, Imperial, Norwich, Ulysse Nardin, Vauchay,
BXU
Eickmann & Co.,
E. Baumann, Aristo Imports Inc.
BXW
Bulova
BXY
Charles Abrecht, Cesar Renfer-Abrecht
BYF
F.T. Bishop Inc.
BYM
Michael Z. Berger
BZK
Berci Inc.
BZM
J.C. Penny Towncraft
COC
Crawford Watch Corp.
CON
Charlin Watch Co., New York
COR
Cornell, Orloff
COT
Tavannes Watch Co. SA, Cyma Watch Watch Co.
COW
Croton, Nivada SA
COY
Cyma
CWT
Caravelle Watch
CXC
Concord Watch Co. SA
CXD
Cypress (Erwin Triebold)
CXH
Clinton Watch Co., Avis Watch Factory
CXJ
Central
CXL
Leonidas
CXM
Circle Watch Corp., Wolbrook,
CXN
Clifford Watch Co.
CXO
Henry Blank Co, Newark NJ, Cresarrow
CXV
Cort, Cortebert
CXW
Central, Benrus
CXY
Croydon
CYN
Prexa Watch Ltd.
CYW
Chesterfield Watch Co.
CZA
Canoe, Camy Watch Co.
DBA
Angelus SA
DOB
Dreffa Watch Co.
DOW
Deauville (Ollendorf Watch Co.)
DWQ
Langendorf, Lanco
DXC
Crawford
DXO
M. Ducommun Co., Minerva
DYR
Den-Ro, Bernard Vuille, Tramelan
DZM
Fluvius Boillat, Fludo Watch
EOE
Elrex Watch Co. Inc., Pierpont
EOM
Emo Watch Co.
EON
Avalon, Calvert
EOP
Paul V. Eisner & Co., Adina, Alpina, Harvel, Rensie
EOT
Lavina SA, Ulmann Fils
EOY
Compass Instruments & Opticals
EWG
A D Goodman & Bros., Mondia
EXA
Eterna
EXC
Everbrite Watch Co.
EXL
Juvenia
EXM
Savoy, Milos
EXG
E. Gübelin, Luzern, Zürich, New York
EXN
Breitling
EXO
Empire Watch Co.
EXU
European Watch & Clock Co., Cartier
EXW
Empire Watch Co.
EYH
Mulco
EZR
Enicar SA
FON
Fewa Watch Co. New York
FYF
Favre-Leuba
FWR
Amko Watch Co.
FXE
Provis SA
FXF
Fairfax Watch Co, Gruen
FXU
Louis Aisenstein and Brothers
Roamer, Meyer & Stüdeli
FXW
Louis Watch Co. Inc.
FYG
Eloga Watch Co., Emka Watch Co.
FYL
Dreffa Watch Co.
FZB
Benfre
GOA
Doxa SA
GOC
Crawford, Rexton
GOG
Greygor Watch Co., Hoga
GOU
Goma Jewelry Manufacturing Co. Inc.
GXC
Gruen Watch Co.
GXI
Gotham (Ollendorf Watch Co.), Juvenia, Orator
GXL
Fortis
GXM
Girard-Perregaux, Mimo, Zenith
GXR
Grant, Emil Braude & Sons
GXT
Naef Watch Co.
GXW
Gothic Watch Co.
GYH
Hilton
GYP
Global Watch Co.
GZR
Grenzler Lee
HOB
Jackson Watch Co., Wakmann

HOM
Homis Co.
HON
A. Hirsch, Tissot, Universal Genève
HOP
Hall
HOR
Lanco Langendorf
HOU
Oris Watch Co. SA
HOW
Charles Gigandet SA, Tramelan
HOX
I.W.C. International Watch Co.
HWC
Juvenia
HXF
Harman Watch Co. Inc.
HXH
Harvel, Vetta
HXJ
Hudson Watch Co., A. Castelberg
HXL
Easton
HXM
RH Macy & Co.
HXN
Harvel Watch Co.
HXO
Harold K. Oleet
HXR
Hambek Watch Co
HXW Helbros, J. Boillat Fils
HYL
Hamilton
HYO
Hilton
HYQ
Hilton, Sultana
HYW
Harper
HZE
Hetega
IXL
Eterna
IXK
Pilgrim Electronics, Jadur
IXN
Ardath Watch Co.
IXO
Ollendorf Watch Co.
IXS
Stetson Watch Co.
IXW
Certina, Kurth Freres
JXE
Normandie Watch Co.
JXJ
Jules Jürgensen
JXL
J. Lipschutz Co., Le Phare, Sultana
JXR
Gallet, J. Racine Co.
JXZ
James Schulz, New York, Genève
KBH
Endura
KBU
Baume & Mercier
KOB
Kelco Watch Co.
KOS
Paul Buhre
KOT
Max Landau & Co. Inc.
KXA
Astin Watch Co.
KXB
Ernest Borel
KXF
Zodiac Ltd., Clebar
KXJ
William J Kappel
KXO
Blancpain, Rayville Watch Co. Ltd.
KXV
Louis Watch Co. Inc.
KXZ
Benrus, Central, Kelton
KZX
Rutex, J. Weber, Sellita, Grewaco
LBA
Ollech & Wajs
LOA
Emil Lange
LOD
Latham Watch Co. Inc.
LOE
Hydepark, Enicar, Packard, Delbana, Glycine
LON
Lorna Warch Co.
LOT
Lathin
LOV
Creation Watch Co., Levrette
LOY
Benrus, Lathin
LXA
Elbon, Langendorf, Lancet, Winton,
Marc Nicolet
LXE
Evkob Watch Co.
LXJ
Jaeger LeCoultre, LeCoultre
LXM
Accro Watch Co.
LXP
Lyceum Watch Co.
LXW
Longines
LYE
Aureole
LZF
Joseph Laufer
LZL
Henry Gireaux Watch Co.
MBA
Watch Imp. Corp., Germinal Voltaire
MOG
M.A. Mead & Co., Avia,
Degoumois & Cie., Boulevard
MOK
Montauk Watch Co.
MOU
Mont Vernon Watch Co., Delbana, Tower, Buttes Watch Co.
MOY
William A. Muney, NewYork, Military
MOV
Marvin
MWS
Le Jour Time Co
MXC
Marshall
MXE
Monarch Watch Co., Delaware
MXF
Marshall Fields & Co., Harman
MXH
Morris Hoffmann Inc., Invicta, Seeland
MXI
Movado Factories
MXT
E. Mathey-Tissot & Cie.
MXU
Zimet Watch Co.
MYD
F. Suter & Cie, Bienne
MYU
R. Lapanouse S.A., Rego Watch
NGH
Universal Genève
NJD
Nastrix
NOA
Ulysse Nardin
NOG
Enicar, Kuper Watch Co.
NOH
Heyworthy, A. Hirsch, Phenix
NOK
Pilot, Ralco
NOS
Amida SA, Heritage, Defender
NOU
Louvic, Hoda
Vulcain, Ditisheim & Co.
NWX
Charles Gigandet, Tramelan
NXJ
National Jewellers Co.
NXO
Oris Watch Co. SA
NXS
Popper Watch Co.
NYN
Conoseur Watch Co.
OWT
Caravelle
OXG
Omega
OXL
Paul Wyler & Co.
OXY
Artis
OYM
Cromwell
OYT
Sandoz, Shiro, Vulcain Watch Fy.
OZA
Doxa SA
OZP
Belforte Watch Co.
POB
General Watch Co., Helvetia
POF
Aureole Watch Co.
POH
Perfine Watch Co.
POK
Karl Plepla, New York, Jadur, Superior
POX
Lucerne, Wega
POY
Camy (Stroun Freres SA), Copley
PWP
Vulcain
PWY
Spera
PXA
Pierce SA
PXC
Crawford Watch Co.
PXP
Patek, Philippe & Co.
PXT
Paul Breguette Watch Co.
PXW
Parker Watch Co.

PYC
Pedre
PYS
Langel Watch Co. SA
QOG
Octo SA, La Chaux de Fonds, Bienne
QXL
Emerson, Lauret
QXO
Kelbert
QZY
Onsa, Nileg, Hans Jörg Gilomen
RBZ J. P. Pingouin Co, Hunsberger & Cie
ROC
Raleigh
ROD
Regent
ROH
Calbert
ROL
Ribaux Watch Co.
ROM
E.W. Reynolds Co., Avia, Belvue, Reyco
ROP
Rodania Watch Co, Rodana Watch Co.
ROR
Audemars Piguet
ROT
Rodania SA
ROV
Marden Watch Co., Inc.
ROW
Rolex, Tudor
RXB
Consolidated
RXE
Brenet
RXG
R. Gsell & Co. Inc., Cortebert, Olympic, Zodiac
RXM
Galmor
RXU
Roamer (Meyer & Stüdeli) 1952
RXV
Juvenia Mfg.
RXW
Rima
Roamer (Meyer & Stüdeli)
RXY
Gala, Liengme & Cie.
RXZ
Benrus, Tower Watch Co. Ltd.
RYD
Richard Watch Co.
RYT
Clinton
RYW
Ritex Watch Co.
SOA
Felca, Felca & Titoni, Siduna
SOE
Semca (Louis Schwab SA)
SOL
Stuart
SON
Defender Watch Co.
SOW
Seeland Watch Co., Invicta
SOX
Cortbert, Orvin Watch Co., Tradition
SWU
Semag, Alben
SXA
Schneider & Co., Nivada SA
SXE
Banner, Savoy
SXK
Eska Sylvan Kocher  & Cie.
SXS
Franco
SXU
Segut Watch Co.
TOB
Pronto
TOC
Capt & Cie.
TOH
Banner, Rivera
YXD
Crysler Watch Co.
TXF
Stauffer Watch Co.
TXJ
Latham
TXU
Alpina Watch Corp. of America
TXW
Tavannes Watch Co. SA, Cyma
TXY
Tourneau Watch Co.
TYW
Elgin, Seth Thomas
TYX
Trebex
UOA
Actua
UOB
Aero Watch SA, Enicar
UOR
Rado
UOW
Universal Genève
UWP
Palmer Sales Corp.
UXM
Medana, Meyer & Stüdeli
UXN
Marsh
UXO
Wega
UYN
Mantab Watch Co. (C. Ruefli-Flury & Cie.)
UYW
Stanley Watch Co.
UZC
Panto Watch Co.
UZO
Crossroads Watch Co., Breitling
VOA
Ventura, Assaels
VOB
Grana, Kurth Freres
VOH
Vulcain Watch Fy
VOS
Voumard, Sheffield, Baume & Mercier, Britix, Jenco Watch Ltd. (Jenny & Frey)
VXB
Chase, Hamilton, Louis
VXN
Vacheron & Constantin, LeCoultre
VXO
Transit
VXT
Kingston, Hilton
VXX
Libela
VXZ
Lewis & Son
VYE
Benrus
VYS
Thoresen, Gigandet, Marcel Benoit, Orator
WOA
Tower Watch Co. Ltd.
WOB
Wyler Watch Co.
WOG
Wakmann Watch Co. Inc., Breitling
WOK
Ralco Ltd.
WOR
Creston
WXC
Williamson, Buren,
Norwich (Imperial )Watch Co.
WXE
Welsbro Watch Co.
WXJ
John Wanamaker
WXO Waltham Watch Co.
WXW
Westfield Watch Co.
WXZ Breitling
WYA
Edward A. Waldman Co., New York
WYX
World-Wide Watch Co., Continental, Harvester
XOU
Pronto Watch Co.
XOV
Endura (Gaston Ries)
XXZ
Kelton
XYG
Westclox
XYH
Alpha
XYV
Hampden
YOA
Perfecra Watch Co.
YOM
Moradpour Trading Co.
YOU
Hallmark Watch Corp (Louis Aisenstein & Bros, New York)
YXD
Crysler, Lucerne
YXR
Angelus SA
YXY
Elgin
ZBH
Mondaine
ZFX
Zenith
ZOA
Baylor Watch Co.
ZOB
Belvior, Evans
ZOK
Telda
ZON
Fludo Watch
ZOV
Titus, Paul Ditisheim S.A.
ZXF
Ebel Watch Co.
ZXW
Benrus, Vulcain Watch Fy.
ZYB
Hawthorne Watch Co.
ZYV
Hampden




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