42 mm. Diameter
The present Speedmaster is one of a numbered series of timepieces created in 1989 to commemorate the 20th anniversary of the Apollo XI mission. The Apollo XI was the first spaceflight that landed the first two people on the Moon, in which Neil Armstrong became the first person to step onto the lunar surface.
Omega produced in total 3 different series to celebrate the 20th anniversary of the Apollo 11 Moon landing: a numbered series of 2,000 watches for the United States, a numbered series of 250 watches for Germany, a limited series of 4,000 watches for the rest of the world. These three models are identical to the standard model except for the engraving on the side. The present watch belongs to the international market variety, of which no numbers were engraved but only with the inscription APOLLO XI 1969 on the caseband. Adding an element of intrigue, this series was fitted with the rare 1450/808 bracelet with semi-circular links.