Just opened up my 1970 PR516 GL for the first time.
How it has spent its life so far: Manufactured 1970 based on serial number, original owner is a family member, no idea how long he wore it, then he put in drawer, then I took it and wore it for a few years around 2000-2005, then I left it in a drawer. Then I found it couple weeks ago...Now it鈥檚 out for service.
The inside of the caseback has what looks like a date etched on it - 30-something-2004 L.
Does that suggest it was serviced in 2004? What might the L mean...?
If so, bit strange because I was using the watch in 2004, and have no recollection of sending it for service...