The age and value of a colt .45 peacemaker serial 180356 are about 1900
50-250 usd
Impossible to value with just a serial number. Could be 10-10000 USD or more
10-165 USD or so
value of 3220 colt pistol
A Colt peacemaker with that serial number was made in 1974.
100-400 USD
A Colt peacemaker .22 model with that serial number was made in 1971.
Proofhouse.com
if a single action then made about 1900. value depends on overall condition...........
Your Colt single-action army peacemaker would be 127 years old, made in 1885,
1971
@1974