If you pop the back lid off you will see the date code and movement model number on the inside of the back lid not to mention the movement it's self, i have three just like it, i have a N6 with a 218 movement, N7 with a 219 movement, and a N8 with a 242 quartz movement, All three of them have "Bulova" stamped on the inside back lid, both the 218 and the 219 are tuning fork movements and they both have the Accutron tuning fork symbol on the dial but the 242 quartz says "Quartz" in place of the tuning fork logo so this one is a 1977 or lower, how much lower depends on when Bulova started to use the 218 movements as this pocket watch never used the 214 movement, in fact i don't believe that Bulova ever made a pocket watch of any kind that used the 214 movement........