Without more of a description the best estimate would be 500-2000
50-300 usd
100-300 USD depending on condition
0-500 usd
@ 1966
100-500 USD
100-1000 depending on specifics
your colt trooper mkIII was made in 1978.
about $750.00
100-700 USD
depending on the finish, between $170 and $495.
Colt J frame.
what is the value of a 8 3/8 inch nickel plated colt trooper