Go to this web site and go to "Double action revolvers" then choose Police Positive Special. http://proofhouse.com/colt/index.html. Good luck - d
Need the caliber to answer.
In 1937.
A Colt official police caliber.22 with the serial number 1478 was made in the first year of production ,1930.
made about 1929
50-400 usd
Serial numbers dont go that low on Offical Police revolvers. Need to know caliber,barrel length,barrel markings,etc.
Try looking on the butt or crane.
It should have the caliber marked on the barrel,such as"38 Colt New Police".
Colt official police with that serial number was made in 1937.
around 1943. Value depends on condition,markings,history,etc.
No way to answer without the serial number.
A Colt official police with that serial number was produced in 1943