THIS IS A 1973 BULOVA ACCUTRON SPACEVIEW WATCH. ON THE BACK IT HAS ” PATENTED 10 KGF BEZEL STAINLESS STEEL G 21118 N3″. THE ACCUTRON LOGO IS AT 8 O’CLOCK. THE N3 PER THE BULOVA WEBSITE INDICATES 1973. THE ONE LUG IS MISSING. THE BATTERY CAP IS JAMMED. I DON’T KNOW HOW TO OPEN THE…