It is probably some late form of this. Omega shows 550-552 in various forms. Can't tell much about the dial from the pictures.
Got it, thanks
Seamaster
Gents' leather strap
Dimensions: Ø34,3 mm
Reference
ST 165.0002
International collection
1962 - 1966
Movement
Type: Automatic (mechanical)
Caliber number: 552
Created in 1958
24 jewels
Central sweep-second hand
Case
Stainless steel
Case back
Screw-in
Dial
Metal, with facetted relief and luminous metal "stick" hands
Crystal
Armoured hesalite
Bracelet
Leather
Water resistance
30 meters
Click to expand...