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- CK 2915-3
First Omega speedmaster model, black oxyde dial with omega applied logo, chrono markers 1/5 sec on dial, baton indexes and “Balane” hands (broad arrow hour hand) using radium. 30 minutes register at 9 o’clock, and 12 hours at 6 o’clock, permanent small second at 9 o’clock (the 3 sub registers with circular guioché). Satin finish bezel with engraved tachymeter scale. Symetric case diam 38 mm, waterproof , antishock crystal srewed caseback with O ring. Massiv lugs, rounded with flat ends fitting 19 mm straps. Back engaraved with electro chemical process : “speedmaster” , the sea horse (the symbol of hermeticity of the seamaster collection) and the Omega logo in center (it was possible to polish off this logo to engrave a name) “head” of the watch with 30 components excluding strap and spring bars. Leather strap or bracelet
This watch was also available with a black tachimeter scale and “Alpha” hands later.
- 2 x 105.003
Larger bezel from 38,6 to 39,7 mm (opening from 30 to 30,8 mm) , batons hands. Progressive introduction of “professional” marking on dial during summer 1965, Omega logo still applied (a characteristic of dial on calibre 321). Fit 19 mm straps. Leather strap or bracelet
- 145.012
New reference for the ex-ST 105.012 «professional » marking on dial, but still with the Omega applied logo (caracteristics of the 321 caliber) inter lugs of 20 mm Leather strap or bracelet. Model replaced by 14.022 in 1968
- 125 aniversario
Speedmaster Automatic 125 First chronograph-chronometer of the world produced in serie . Limited edition of 2.000 pces for the 125th anniversary of Omega, “tonneau” shaped case , movement fixed in a “container”, srewed caseback, integrated bracelet ST 1221/212
- Speedsonic f300Hz "langosta"
Speedsonic f 300 Hz Chronometer tuning fork movement, steel case with movement fixed in a « container » , integrated bracelet « lobster »
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