Colt police positive special with that serial number was made in late 1922.
Colt police positive special was made in 1915
About 1929. for a police positive special and 1935 for a police positive .38
By the serial number, features and markings.
made about 1962
The Colt Police Positive Special with that serial number was made in 1936. Police Positive .38 was made in 1911.
Take your pick: Police positive .38 in 1916. Police positive special in1913 and Police positive .32 in 1911.
Proofhouse.com has Colt sn tables.
A Colt police positive special .38 with sn 262352 was produced around 1922.
Colt Detective Special serial numbers do not end in two letters. If you are positive the last two are "RD", you need to call Colt.