Hi everyone. Long time lurker, first time poster. I bought this about 7 years ago. Wondering what y'all could tell me about it in terms of just how early this one is. Serial is 6609657. It had been sitting in my watch case for a couple of years and I just decided to wear it about a month ago, so I took the BoR off and put a NATO on it because while it works just fine, the clasp is a little delicate. The watch came with the bracelet, but was missing end pieces. Nanuq was awesome enough to GIVE me correct end pieces for the bracelet. I had it serviced in '14. It keeps great time and is almost as comfortable to wear as my '67 GMT II. Afraid to take it into the water because it's damn near as old as I am. I've searched high and low on the internets and I can't seem to find a comparable one to figure out what it's worth. It's got me jonesing for a Black Lung reissue. Anyway, Hi and great forum you have here.