This will need a hands-on appraisal by someone knowledgeable in antique firearms- and it will depend on exact make, model, and condition- none of which you gave us. By the way, the 44-40 cartridge was not developed until 1873.
50 USD
You will have to get it lettered by Colt to see if it is original. If not, 100-500 USD
500,000
It is worth around 200 to 600 dollar
The word of God.
800 dimes make $80.
$50
depending on condition of your revolver it would be worth 775.00 dollars in 50% condition up to 1,000 in 70% condition.
i have found this old revolver in a pawn shop for 20 bucks how much is it worth
Type in "1871 Liberty Seated dollar coins" in your search box an click images. This will show you the coins.
50-150 or so
50 or so