The Colonial pistols tend to be low in the value scale, $100 to 200 depending on condition. This has nothing to due with how they shoot, that model has been the first black powder gun for thousands of people over the years, and though not the most accurate, would put food on the table with a bit of practice.
Impossible to tell from just the sn. if you found the serial number, you will be able to find the caliber of the pistol somewhere carved in the metal.
Can't tell the caliber from just the serial number.
@ 1884
Rifle or pistol?
No way to answer without the serial number.
100-10000 USD
1911
Small inexpensive pistol
@1914
50-400 usd
@ 1972
about 1906