New here, and want to thank everyone for posting info, stories, history etc. which really helped me decide to start my collection off with a 'Services' watch.
I'm assuming because of the 'S' in the shield that mine is from somewhere between the late 50's to late 70's. It gains around five minutes a day and the dial is a little scuffed, but it's still beautiful. I added a fresh strap and pins and I absolutely LOVE it.
I haven't opened it up yet, but the back has 'Water Proof,' 'Antimagnetic,' 'Swiss Made,' 'Shockprotected' and 'Stainless Steel Back' circling an 'S' in a