Just curious....do the service numbers/markings follow a common pattern? Assuming these are "service" numbers on this one, do these [2563 in the inside of the case back} relate to anything?



http://www.ebay.com/itm/-/261104051248?item=261104051248&ViewItem=&ssPageName=ADME:B:SS:US:1123Purchases made through these links may earn this site a commission from the eBay Partner Network

 

Watchmakers seem to have their own codes. Never saw anything that made me believe they all adhere to one pattern.

 

Nope, no method to the madness. Most of the old school watchmakers would scratch a date or a job number and maybe initials. This provides somewhat of a repair history. You can see how many marks and sometimes recognize the watchmaker. I recently did a watch for ulack and was able to tell him about the watchmaker who serviced it over 30 years ago.

Nowadays the Swiss frown on those scratches and use a sharpie to write coded numbers in the back. Whenever it is serviced the older info is removed.

Steve

 

Agree with this assumption -that the marking would indicate the date of date of service. But the example above does not support this theory if we think of 2/5/63 as a date marking and since the Seller says it was produced in 67.