Omega Speedmaster Professional Mark II 2 Moonwatch 861 ST 145.014

Omega Speedmaster Professional Mark II "Moon watch" vintage vtgwatch 

All original 

Movement number: 31626488 so from 1973

Fully serviced May, 2014 

Original new Omega glass 

Information from official Omega website: 

International collection 1969 

Movement type: Manual winding (mechanical) 

Caliber number: 861 

Created in 1968 

17 jewels 

Reference: ST 145.0014 /ST 145.014 2750-67 Formerly called "27 CHRO C12 PC" 

Used on second generation "moon watches" 

Functions: Tachymeter, Chronograph 

Case: Stainless steel 

Case back: Screw-in 

Dial: Mat black, with luminous hour markers, white luminous hands, and inside tachometer scale 

Crystal: Mineral (flat) 

Bracelet: Stainless steel (attached)

Moonwatch according to wiki: 
Omega Speedmaster is a line of chronograph wristwatches produced by the Omega Watch Company. While Chronographs have been around since the late 1800s, Omega first introduced their chronographs in 1957. The manual winding Speedmaster Professional or "Moonwatch" is the most well-known and longest-produced; it was worn during the first American spacewalk as part of NASA's Gemini 4 mission and was the first watch worn by an astronaut walking on the moon during the Apollo 11 mission. The Speedmaster Professional remains one of several watches qualified by NASA for spaceflight and is still the only one so qualified for EVA. The Speedmaster line also includes a multitude of other models, including analog-digital and automatic mechanical watches.