PROTOTYPE - OMEGA NASA ALASKA IV Speedmaster LCD cal.1621

One of approximately 25 prototypes produced for the ALASKA IV NASA Mission. The watch is all original and carries the rare beta-Tritium modul 1621 ( glowing after UV activation; half-Time of Tritium 12,3 years) , thick Case, thick Case Back, thicker pushers, NO-light dial and 1621 stamped only inside the Case Back. This is one of about 7 known Versions which has original plain leather strap and original sun OMEGA Buckle. Contact us for any question or additional Pictures.