images borrowed from cyberspace VINTAGE 150M CITIZEN DIVERS CITIZEN CHALLENGE DIVERS 68-5372 , 62-6198, 52-0110 .... AFTER MARKET BEZEL INSERTS are available thru " YOBOKIES" NOTE: they will have a different lume pip from the OEM [original] bezel inserts ACCORDING TO .... VINTAGECITIZENWATCHES.COM .... Vintage Citizen Divers 150m: 68-5372 , 62-6198, 52-0110 All three divers ..... 68-5372 , 62-6198, 52-0110 ..... despite being assigned different case ref# numbers 4-740131Y 4-600851Y 4-820789Y They use the same exact case with the same screw-in large crown. The bezel is bidirectional friction type. The sides of the cases are polished and the frontal surfaces are brushed in a similar manner. They are 40mm wide with 20mm steel bracelets at the lugs, they also came paired with a 20mm SWISS TROPIC MOD DEP diver strap that had a Citizen branded INOX buckle. They share the same mineral crystal, concave on the inside, with a flat surface, that magnifies the beautiful black dials. The movements are automatics with 21 jewels. All three display the date at 3 o’clock and have a central sweeping hand with a luminous dot. The hour indexes are applied rectangles, large, and filled with luminous material. HERE ARE SOME PARTS REF# THAT MIGHT BE OF USE ...