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About 1913 for a Colt police positive special with that serial number.
1966
1954
Police positive heavy frame: 1925 starts with Serial # 250000. Police positive special & Detective special: 1908 starts with Serial # 1 Police positive .32 & target: 1907 starts with Serial #495000 Police positive .38 & banker's special: 1905 starts with Serial # 1
about 1963
Would need serial number to answer or go to proofhouse.com and look it up.
That Colt police positive special with serial # 594826was manufactured in 1951.
According to proofhouse.com a Colt police positive special with that serial number was made in 1957.
A Colt police positive special with that serial number was made in 1964.
A Colt police positive .38 with that serial number was made in 1931 and a Colt police positive special with that serial number was made in 1928.
A Colt police positive .38 with that serial number was made in 1930. A Colt police positive special with that serial number was made in 1928.
If you are looking for when made--see below: The Colt police positive .38 & banker's special with that serial # was made in 1940. The Colt police positive special & detective special with that serial # was made in 1930.