"Speedmaster Professional" Omega, "Speedmaster Professional", (First Series), Ref. 2998-5. Made circa 1961. Fine, water-resistant, stainless steel wristwatch with roundbutton chronograph, registers, tachometer and a stainless steel Omega link bracelet. | Important Collectors' Wristwtches, Pocket Watches & Clocks | New York, 26th September 2007
"Speedmaster Professional" Omega, "Speedmaster Professional", (First Series), Ref. 2998-5. Made circa 1961. Fine, water-resistant, stainless steel wristwatch with roundbutton chronograph, registers, tachometer and a stainless steel Omega link bracelet., USD 6,000 - 8,000 EUR 4,500 - 6,000Sold: USD 11,800 C. Three-body, polished and brushed, screwed-down case back engraved with the Speedmaster logo, dust protection cap, tachometer graduation on the bezel to 500 UPH, lapidated lugs. D. Black with luminous baton indexes, subsidiary dials for the seconds, the 12-hour and 30-minute registers. Luminous steel "alpha" hands. M. Cal. 321, copper-colored, 17 jewels, straightline lever escapement, monometallic balance, shock absorber, self-compensating Breguet balance spring. Dial, case and movement signed. Diam. 40 mm. Thickness 13 mm.
