Caseback marking

[indianmachine]

Know it's a long shot, but does anyone recognize which watchmaker uses this signature or can make out anything of this code on the caseback? I'm trying to get a sense of when the last service was and what work was done by contacting the watchmaker, if identifiable.

https://imgur.com/a/zhSi2JK

[offrdmania]

Very hard to know, a lot of times they have their own codes that no one else can decipher. The best I can tell is the previous service was in April of 2012 but who knows if that is even a date. Could be an internal code that references an invoice or customer number for all we know.

[Dan S]

We need a watchmaker scribble website. ;-)

[springer]

The 4-12-12 is the date the watch was serviced.

COR is clean, oil, regulate

CW probably means or refers to a cleaning or it is the watchmaker's initials.