This is an all-original 35.25mm 1966 Omega Seamaster having the desirable caliber 321 movement (just meticulously cleaned and is accurate) and original pristine dial having all deep-vanilla lume plots and original hands. The original plunger pushers, winding crown, screw back, and hesalite crystal are all present. This steel case displays very fine overall condition and the bevels on the lugs are still decently sharp. I would call this a supreme example of a highly sought-after vintage Omega caliber 321 chronograph. I believe these fine watches will escalate in value.