Proofhouse.com has Colt sn information.
It would be 90 years old. If it is a Colt 1903 hammerless .32 , it was made in 1921.
Around 1921 for a 1903 colt hammerless .32 with that serial number.
87 yrs old
about 1920
about 1922
Colt data at Proofhouse.com
87 years old
@89 yrs old.
Per proofhouse.com ,the Colt pocket positive with that serial number was made in 1917,making it about 92 years old.
Colt (in both the 32 and 38) added "Colt New Police" to avoid advertising the S&W developments in 32 and 38 ammunition. The Police Positive Special will fire the old .32 S&W cartridge as well as the .32 S&WLong. You can also fire the old .32 Colt and Long Colt Cartridges (don't expect great accuracy). Why? Because these rounds use the same .312-313 bullet that are of the full case diameter, heeled variety like the modern .22 rimfires. Firing them in 32 S&W Long chambers will over expand the smaller cases ripping them apart. The .32 S&W and S&W Long cases are too large to fit in the older Long Colt chambers.
That sn does not follow normal convention for the range Cobra's are in. Recommend you call Colt.
That Colt .32 hammerless was made in 1924.