Omega, “Speedmaster, Professional”, No. 620 , Ref. BA 145.022-69. Made in a limited edition of 1014 examples from 1969 to 1972. Very fine and rare, asymmetric, water-resistant, Solid 18K yellow gold gentleman's wristwatch with round button chronograph, 12-hour and 30-minute registers with an 18K yellow gold Omega bracelet with deployant clasp.

D: 100% Original Gold dial with applied blackpainted gold indexes, applied Omega logo at 12, outer minute/seconds and 1/5th seconds divisions, sunk subsidiary dials for the seconds, 12-hour and 30-minute registers. Black “baton” hands.

C: 100% Original Three-body, polished and brushed, with lyre lugs, crown and pusher with integral guard, burgundy revolving bezel, graduated tachometer scale, screwed-down case back, engraved “THE FIRST WATCH WORN ON THE MOON, 620, OMEGA SPEEDMASTER- APOLLO XI 1969.

Diameter 42x48mm. Thickness 14 mm

M: 100% Original Cal. 861, copper-colored, 17 jewels, straight-line lever escapement, monometallic balance, shock absorber, selfcompensating flat balance spring.

Dial, case and movement signed.

Watch keeps accurate time and Chronograph function works accordingly.

Another example of this limited edition series was sold in the Antiquorum OMEGAMANIA Auction on 15-04-2007 for 29,500 CHF (about US$24,300 / SING$37,000).