From the looks of the pro casecolor job on the frame ,I suspect someone saw an opportunity when an already tarted up Cresent 410 was put up for sale.
The Bbl finish looks poor in contrast to the rest of the gun and the bbl's where all the 'Englishing Up' was done to it.
No frame proofs. No Rigby lettering on the frame.
Everything that says it's an English gun is on the poorly finished bbls.
Add/change the bbl marks and someone's pet Cresent project gun became a Rigby.
That work is amature at best. The proof lettering was attempted by hand, the top Rigby lettering looks like they made use of a pantograph.
The finish looks like a quick cold blue that worked about like you'd expect the wipe on products to work.
Perhaps any existing top rib matting and original lettering was removed also leaving the smooth surface.
Just my thoughts..
