OMEGA Goliath I think, 8 day movement, possibly supplied by another company. I have marked the 27''' movement, but after checking the measurement on the image, I think it is the one below with 30''', didn't want to make a new picture.
I think the experts here will be able to tell more, it is a very well know movement.
A forum community dedicated to watch owners and enthusiasts. Come join the discussion about watch collections, displays, watch winders, accessories, classifieds, and more! We welcome all manufacturers including Casio G-Shock, OMEGA, Rolex, Breitling, Rolex and Tudor, Seiko, Grand Seiko and others.