Depends. Current market trends show anywhere from a low of $400.00 to a high of $900.00 based on the original equipment you have such as extra grips, the original box with paperwork, extra cylinder and the relative "cleanness" of the firearm itself.
Take it to a reputable dealer in your area. But remember you will get more for selling it private party than any dealer will give you. Good luck
if a single action made about 1877 is the question make a 'number' ?????
A Colt peacemaker with that serial number was made in 1974.
suggest you check writting on barrel. it should indicate caliber..............
1971
about 1973
About 1974.
1974
@ 1973
1971
1915
Need serial number to answer.
Made in 1976.