about 1914
100-700 USD
50-1000 usd
All my reference,s indicate that the model 1905 colt was chambered for the 45 cal. Please check your model number again,Could it be a new army model?.
50-550 usd
'ACP' means Automatic Colt Pistol. A 1911, for example, would chamber a .45 ACP cartridge.
Automatic Colt Pistol. Colt invented the .45 Auto and thus had the right to name it.
Colt 1911
The .45 ACP--which stands for AUTOMATIC COLT PISTOL is used in semiautomatic pistols. The .45 Colt is used in revolvers.
To vague a description. Could be worth 500-5000.
Caliber .45 Automatic Colt Pistol.
.45 Automatic Colt Pistol (also known in some countries as the 11.65x23 mm), and no other cartridge.