used Omega 751 (serial 31,951,458) Watch movement part as pictured used & functional part, no rust, as pictured ... comes from a dry storage.
family for this caliber: 550: 17 jewels 551: 24 jewels, chronometer 552: 24 jewels 560: 17 jewels, date 561: 24 jewels, date, chronometer 562: 24 jewels, date quick set date: 563: 17 jewels, date 564: 24 jewels, date, chronometer 565: 24 jewels, date 750: 17 jewels, day/date 751: 24 jewels, day/date, chronometer 752: 24 jewels, day/date
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