Jewelers and watchmakers forum site comments blog
Search Esslinger Watchmaker Supplies Blog

Categories

Posted by Esslinger Staff

 

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.

 

 

 

bulova_case_number_frontACCUTRONbulova_case_number_back

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_case_numberCITIZEN

 

 

Number on outside of case back; Usually begins with “4”. Example 4-063546 or 2030-915660. Also Model No. BW-7244 or 71-2330

 

 

 

 

 

 


 

 

OMEGA

 

Number inside case back. Example: 145.012

 


 

 longines_case_numberLONGINES

 

 

Example:
Old watches (CMT2512-MO520)
New watches(L2.654.5)

 

 

 

 

 


 

 PULSAR/LORUS

 

Number on outside of case back. Example Y432-5901

 


 

Rado_case_numberRADO

 

 

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_case_numberSEIKO

 

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

 

 


 

movado_case_numberZENITH

MOVADO

 

 

Number on outside of case back.

 

 

 

 

 

 


 

 esquire_case_numberesquire_case_back2ESQUIRE

 

Share Button
  • Bill Liddell

    I’m not a collector so this is likely going to sound really dumb but… what is a case number? Why does it matter? I have a TCM Orienteering PVD watch and the number on the back is 07-0116. I understand the 07 stands for the model, but what does the case number indicate? Is it unique to my particular watch like a serial number would be? Does it matter? Just curious. Thanks