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.
Number inside of case back, embossed or stamped in black ink. Example N510 or 3170 or C852062 And dial# on dial at 6:00.
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
Number inside case back. Example: 145.012
Old watches (CMT2512-MO520)
Number on outside of case back. Example Y432-5901
Number is on outside of case back And Dial # at 6:00
Number inside case back or between Case lugs at “12” position. Example 6334
Number on outside of case back. Usually 8 digits Example 6139-6005
Number inside of case back. Example 17422 or T281/381
Number on outside of case back. Example 722-946B
Number on inside of case back. Example 722-946B
Number on outside of case back.