Omega Speedmaster Professional Moonwatch 105.012-66

An Omega Speedmaster Professional Pre-Moon chronograph stainless steel gentleman's bracelet wristwatch, Ref. 105.012-66, circa 1967, the signed and jewelled 321 caliber movement numbered '25443812', with dust cover, the signed black dial with luminous hour markers, three subsidiary dials, and tachymeter scale, the signed case back interior numbered '105012-66', the case back with Speedmaster emblem, the tapered link bracelet with signed foldover clasp, case diameter 4cm.