Speedmaster Professional Mark II (First Generation)
OMEGA introduced the Speedmaster Professional Mark II in 1969. While retaining the Calibre 861, it adopted a streamlined tonneau case and a tachymeter scale printed beneath the crystal, creating a distinctly modern professional chronograph separate from the Moonwatch. Reference ST 145.014 is the clearest search key for the original generation.
History timeline
1969
Introduced
No longer available for purchase directly.
Source: Fratello