Hi, Don Pedro,
I don't like to contradict C.R. Sam, but I believe he is thinking about the single action Russians. You said your gun is a break top DA in .44 Russian, which could be one of only two guns, the First Model DA or the Wesson Favorite. The .44 Russian was the most common caliber for both. The latter has lightening cuts above the trigger guard and on the top of the barrel rib, with the patent dates on the cylinder instead of the barrel rib.
The First Model DA in .44 Russian goes between $375 (10%) and $3000 per the Blue Book, but Flayderman only goes to $1000 for "excellent". (FWIW, I think that $3000 is too high; those guns are uncommon, but not really that rare, even in top condition.)
But if you have the Wesson Favorite, it shows in the Blue Book as $2000 for 10% finish, to a tops of $7600. Flayderman shows $3750 for very good, $8500 for excellent.
As to the reblue, some people consider a good reblue equivalent to 60%, but I don't think many collectors will go along.
Trouble with a reblue is that remaining original finish is zero. If it is a good job, some collectors might still want it to fill a hole in the collection, as there were less than 1000 Favorites made, and they are not found lying in the street.
As to value, I will make a couple of wild guesses. I would think a reblued First Model would run about $700. On a reblued Favorite, I would guess a value at around $2500, but a really good reblue could bring it up more. I have no doubt though, that your $100 was a great investment.
Jim