Iconic Bulova Accutron Spaceview, commemorating its 50th anniversary this year. The "M3" inscription on the back indicates that its production year was 1963. The skeleton movement and the spools are clearly visible through the dial crystal, with white second hand and luminous white hours and minutes hands, convex crystal with yellow markers and a yellow Accutron logo. Steel case diameter measuring 35 mm, with stainless steel bottom, the battery slit can be easily opened with a coin, a new battery has been installed. The wristwatch is in working order and you can hear the buzzing of the tuning fork. The adjustment lever can be raised with a thumbnail or a nail. The back is signed as follows: "BULOVA WATERPROOF INOX (stainless steel) BREVETÉ (patented) K16844 M3". In perfect working order and keeping accurate time. Strap bracelet in genuine leather measuring 19 cm (excluding pin buckle). This Spaceview model is one of the most collectible watches among all the first Accutron ones from the 1960s. Careful and registered shipping with insurance. Happy bidding everyone.