The ref. 3691.50.31 Speedmaster Professional Apollo-Soyuz 20th Anniversary, introduced in 1995 and limited to 200 pieces, marks the 20th anniversary of the Apollo-Soyuz space rendezvous. It features a yellow gold case, a black dial with applied markers and encircled subdials, and a caseback engraved to commemorate the event.
Shape
Round
Lug Distance
20.00 mm
Material
Yellow Gold
Glass
Sapphire
Diameter
42.00 mm
Water Resistance
50.00 m
Dial Color
Black
