In 1937.
Need the caliber to answer.
Manufactured in 1930.
1962
1975.
1931
Colt official police with that serial number was made in 1937.
A Colt official police with that serial number was made in 1966.
1935
Your colt official police was made in 1951.
That Colt official police was made in 1935,
We need make, model AND seral number. 30 WCF is the caliber. Several companies made rifles in that caliber.
A Colt official police with that serial number was made in 1929.