This is a Speedmaster reduced...it is an ETA movement with a chronograph complication piggybacked to it. Not considered a moonwatch by most.
You can visualize this looking at the side with the winding crown. The plane of the pushers is on a different plane than the crown. The ETA time movement and the Dubois-Depraz chronograph module attached to it are both quality machines. Repairs can be pricey as frequently the module is simply discarded and replaced with a new one. Demand is not high with collectors, but it looks like you got the real deal at a decent price. Good looking watch! Enjoy it!