Several companies were involved in conversions. There were hundreds of thousands of these revolvers available after the war. Some were converted in Great Britain and re-imported with their new configuration; others came back unchanged and were modified in this country.
I have one of the latter. As I mentioned in a higher post in this thread, I recently picked up a lend-lease victory whose barrel was not chopped, finish not upgraded, and stocks not replaced. The only thing non-standard about it is that it was bored out to take .38 Special rounds. That action was taken in silence -- there is no indication anywhere on the revolver that this was done. I will never shoot .38 Specials in it, as they simply feel too loose.
That's a satisfactory high-polish re-blue on your gun, by the way. It's possible to make a mess of those by over-polishing or ineptly polishing the surfaces before the gun goes in the bluing tank, but whoever did yours managed to avoid dishing the side plate screw holes and rounding over the edges at the sideplate/frame boundary.
