Vintage Tudor Oyster Prince Submariner 7928 automatic wristwatch; ref. 7928 serial no. 570719 in stainless steel with black dial, center seconds, bidirectional bezel, 17 jewel cal. 390 movement, case marked 7928, VI 66, case diam with crown 44 mm, Rolex Oyster bracelet, date manufacture C - 1967, with guarantee card dated 1970, original box, scratched glass, working but can't adjust time due to worn crown.