Evening Squire,
Yes, although it is earlier, C 1525, it has similarities so marked that I believe it and the "Mary Rose" guns came from the same shop. Same guard type, same trigger, with little acorn pattern. Same stock Style, But, the later "Mary Rose" has a shoulder stock and a longer, more modern barrel.
Do you know a certain M Taylor? He's from Sheffield originally, and has made a few Mary Rose types. He's been in NZ for many years now.
I never knew him when I still lived over there, but we both used to visit Bulmer's gun shop in Lord Mayor's Walk. (York)
A pal in Washington has one of Maurice' M-R snaplocks.(And he's originally from Grimsby! )
Richard.