Daytona movement - opinions please

[TimeToGo]

I am looking at a Daytona and I was provided several photos, the attached photo is being passed as an authentic Daytona movement from an A-serial watch. I am not too familiar with the Daytona watch, I believe the zenith movement would be the appropriate movement for this watch with a number of 4030. The movement below is inside an authentic case serialized with matching papers.

Comments please.