Welcome to the Forum

MANY gunsmiths of that era were doing almost identical conversions.

Yours looks good

Probably the two best known and well respected were John Jovino who was doing them as a stock item for stores to order and Austin Behlert who was doing them on demand for individual customers.

Without markings or the firearm being directly shipped to Jovino being confirmed in a letter, there is no way to determine who did your revolver's conversion.
As long as you purchased it at a reasonable price and enjoy it, don't get too worked up over who did the work