
The ref. 3197.50.00 (BA 345.0052.035) is a limited edition of 7 Speedmaster watches in yellow gold that spent a total of 365 days aboard the MIR space station before being sold to the public in 1995. Only two examples featured the gold bracelet as pictured; an additional 28 stainless steel Speedmasters got the same treatment.The caseback of this model is engraved with ‘365 DAYS ON BOARD SPACE STATION MIR’ and ‘JULY 1993 – JULY 1994’.
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