Answer: No! GP used that movement (Adolf Schild Cal. 1130) but many others did too. And when you see the name on the movement in a separate rectangle (where the movement plating has presumably been etched away to reveal the brass) - and especially when the movement looks grotty and the name and area around it looks fresh - you can bet your bottom dollar that it's a fake.
And, the "masonic dial" GPs are a known type of GP fakes. Redials at best, usually total fakes (like this one). There's more of that rubbish out there- dials with a cards/casino motif, "bunga-bunga" dials, and others. Mostly because of the generic movements - and that said, of how easy it is to fake a GP - GP seems to be fakers' all-time favourite.
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