An Omega Seamaster Professional Co-Axial Chronometer Planet Ocean Wristwatch Dial and Parts for ref. 2908.50.83
Dial in Good condition, a few light marks. 
Markings on the back - WK3170011 P, SWISS, BPSUII.
Diameter approx 32.3mm.
Bezel in Fair condition, surface scratches.
Diameter approx 43.2mm
Glass has a crack.
Diameter approx 33mm.