
Alexandre de Lamberterie
Specialist
€25,000 - €35,000
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In 1979, NASA astronauts received a special batch of the reference 186.004, a prototype version of the 186.0004. These digital Speedmasters were for the Omega Alaska project, the company's testing ground for watches. These prototypes differ from production versions in several aspects: a thicker case to fit a tritium tube lighting system for the dial, the word 'Light' on the dial is absent, and identical numbering of 1621 to the inside case back.