For sale is a mens vintage 1975 CWC “Fab Four” manual wind chronograph made for the British Military. The model reference number is 6B/551. The serial number is 924-3306. This watch is number 48 out of the 77 made in this run (in total only about 3600 of these watches were produced from 1973-1982). The watch features a beefy asymmetrical stainless steel case (right side is extended longer than the left), original acrylic crystal, original dial and hands with lume, screw in back, new leather strap, and a Valjoux 7733 movement with 17 jewels. The watch measures 39 mm in diameter without the crown, by 46 mm lug tip to tip, has 20 mm wide lugs, and a case thickness of 13 mm.