here is one of the older watches that came in my massive win a few weeks ago. I was amazed that it was running. Only had to give it a cleaning. I have two issues to solve. One is the date.
I'm sure this is a 1950's Marlin but, what year? There is no ink stamp on the inside of the case back. Second is that the case back does have heavy wear so the retaining ring does not have as much surface to screw down into.
So how old is this watch?