Read this. Not convinced the guy's opinion is accurate though. It appears that most of 'em were FTR'd No. 4 Mk I*'s into Mk II's and not newly made though. Lot of 'em were assembled using parts from anywhere too.
https://webpages.uidaho.edu/stratton/pakistan.htm
I'd be putting the thing on one of the auction sites vs a local gun shop who very likely wouldn't know much, if anything, about 'em. Or talk to Joe Salter. He sells nothing but high end stuff. No idea what it'd cost though.
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