ORIGINAL Atlantic Worldmaster wristwatch Material: steel 21-jewel 6300N mechanical movement. Case diameter: 39.7 mm including crown, 37.5 mm excluding. Distance between the lugs: 18 mm Thickness: 11.1 mm Strap length: 20 cm excluding buckle, 21 cm including the buckle. Period: 1970-80 This 21-jewel ORIGINAL Atlantic Worldmaster wristwatch is made of steel and has a chrome case. It is in very good aesthetic condition considering its age. It works very well and keeps time perfectly, an adjustment has been made. The watch has been cleaned and very lightly polished. The plexi-glass is like new. The movement is in good condition and spins perfectly. The dial is in good condition. Crown is original and signed "a". Very nice item with a large diameter. It is placed on an old black leather strap with an old buckle. Registered and secure shipping by post, with tracking and signature upon receipt. Shipping costs to be paid by the buyer. If you are satisfied after the purchase, please do not hesitate to leave a positive evaluation on my profile! Thank you!