If refinished it's a good job. Maybe arsenal
$750 is a very low estimate
You know, my guess is it might be arsenal. Many edges remain sharp and case coloured components remain as such. Maybe $1000 is a better estimate. I can't see it going for too much more than that, as unrefinished examples don't bring considerably much more, and I'm not a big fan of refinished revolvers, with rounded edges to side plates and bluing in pitting, etc.
Here's one with no original finish but not refinished that sold for $1525:
Ludwig Loewe Commercial Smith & Wesson No. 3 Russian Copy, 1880s Antique | Lock, Stock & Barrel
Here's one that is refinished, and the refinish is such that the sideplate bluing is distinctly different than the frame bluing and case coloured components were erroneously blued, and it brought $2040 at auction. Described as "arsenal quality
refurbished". Despite the pre auction estimate of $2000 to $3000, for what it is, the hammer price of $1700 and sale price of $2040 in 2020 seems high and some Covid zaniness might be priced in, or someone was interested in it because of the Argentine contract.
Argentine No. 3 Third Model Russian Revolver by Ludwig Loewe
If I were to sell yours, maybe price at $1250 and accept a grand. Might have to go a little lower. If selling at auction, with seller's premiums, you might net as little as $750, in which case a sale price under $1000 in a private sale might be almost attractive.
I just don't see much upside long term to refinished black powder revolvers.