ask your question on: 'coltforum.com'
50-1000 USD and up depending on specifics
45 ???? revolver or pistol ????? what is the model ????
300 USD or so
value depends on overall condition.....................
Colt has never made a 45/410 pistol
value depends on overall condition...................
condition and serial number needed.........
made about 1907
100-700 USD
Blue Book of Gun Values has commerative values
check out gun sites on line. look up the 45 1911 pistol and compare condition and prices to your pistol
'ACP' means Automatic Colt Pistol. A 1911, for example, would chamber a .45 ACP cartridge.