Discussion Starter · #1 ·
Here is another piece from my personal collection, a Gruen Precision with a 17 jewel movement, autowind & calender systems. I even have the original Gruen storage box. This is a very accurate piece, and measures 33mm in diameter. I believe the "Ra SWISS Ra" dial markings means it had a Radium lume? If so, can this help me estimate the date of the watch?