what's the question ???
Colt offers history letters.
1922
Proofhouse.com has Colt sn data.
If it is a Colt Vest Pocket model, 1921.
A Colt hammerless .25 with that serial number was made in 1925.
your colt 25 cal semi-auto was made in 1972.
@1914
@1923
@ 1912
about 1936
about 1919