Take a look at this 4992B.. it has a short chain attached to the bow.. My question is, was this chain a Military issue with this watch ?? Just thought it odd because the 4992b that I have, has exactly the same chain.. the ends appear the same, the length appears the same and the link style is the same..

http://cgi.ebay.com/Vintage-Hamilton-Military-Pocket-Wa...QQrdZ1QQcmdZViewItem