You will have to call Colt to find out.
You need to call Colt. That sn is beyond the published lists.
50-500 USD. You must call Colt
You will need to call Colt to find out.
proofhouse.com
1980-1983
it is disassembled the same way as a military 45 pistol..................
100-1000 depending on specifics
The Colt Mark IV Series 80 in .45 Colt was introduced in 1983 as part of Colt's series of semi-automatic pistols. The Series 80 incorporated a firing pin safety mechanism, enhancing the safety of the firearm. Production continued throughout the 1980s and into the 1990s, with various models and configurations available during that time. Specific manufacturing dates can vary based on the model and production runs.
Published data doesn't cover your sn. You will have to call Colt.
You must call Colt. 50-500 USD
100-1500 USD
The age and value of a colt .45 peacemaker serial 180356 are about 1900