To obtain watch parts correctly, it is important that Case numbers be used when ordering these parts. Different watch manufacturers place these numbers at different points on the case. This listing is a guide in obtaining the correct number.
Rolex Serial Numbers with Production Dates. These sets of numbers, for example 28000 for the year 1926 or Z000001 for year 2006, are inscribed by machine on the side of the watch case between the lugs at 6 o’clock (see below). It is very helpful to know the official Rolex production date to help us determine its market value. Register your watch purchased from an Authorized Dealer in the United States for an additional one-year warranty. Terms and conditions of the additional one-year warranty follow t.
ACCUTRON
BULOVA
CARAVELLE
WITTNAUER
Number inside of case back, embossed or stamped in black ink. Example N510 or 3170 or C852062 And dial# on dial at 6:00.
CITIZEN
Number on outside of case back; Older models usually begin with “4”. Example 4-063546 or 2030-915660.
Also Model is shown on older models Example No. BW-7244 or 71-2330
OMEGA
Number inside case back. Example: 145.012
LONGINES
Example:
Old watches (CMT2512-MO520)
New watches(L2.654.5)
Old watches (CMT2512-MO520)
New watches(L2.654.5)
PULSAR/LORUS
Number on outside of case back. Example Y432-5901
RADO
Number is on outside of case back And Dial # at 6:00
ROLEX
Number inside case back or between Case lugs at “12” position. Example 6334
SEIKO
Number on outside of case back. Usually 8 digits Example 6139-6005
TISSOT
Number inside of case back. Example 17422 or T281/381
WYLER
Number on outside of case back. Example 722-946B
ZODIAC
Number on inside of case back. Example 722-946B
ZENITH
MOVADO
Number on outside of case back.