Proofhouse.com has Colt sn data
Your colt official police was made in 1951.
That Colt official police was made in 1935,
Your colt official police was made by colt in 1940.
Your colt official police was made in 1939.
Your colt official police was made in 1967.
@ 80 years old
It is 74 years old, made in 1936
Colt official police with that serial number was made in 1937.
Your Colt official police special was made in 1956.
If your Colt official police is chambered in .22cal?Then it was made in 1937.
your colt official police was made in 1958.
It would be 81 years old. It was made in 1929.