How are we supposed to be able to answer this question without knowing the manufacturer and model? A serial number and calibre alone doesn't tell us anything which can be of use in providing you an answer.
1877 if it's a Single Action Army. Nothing special about the serial number.
The butt.
50-200
if it's a New Service model it was made about 1920
Made about 1972, 37 years old, for a Colt police positive special with that serial number
there are far to many #s to be a proper serial #
Check the butt
1967
It was made in 1900 and the sn has no significance. Proofhouse.com has Colt sn data.
Impossible to answer without a serial number. If you call Colt and provide the serial number they can tell you.
37 years old. A Colt police positive special with that serial number was made in 1972.
To determine the age of a 32 caliber Secret Service Special revolver with serial number 178866, you would need to consult production records specific to that firearm model and manufacturer. The Secret Service Special revolver was produced primarily in the early to mid-20th century, so the serial number can help establish a rough manufacture date. Generally, collectors and firearms experts can provide more precise dating based on the serial number and other features of the revolver.