You could get a historical letter from Colt. Cost is about 100 USD or so.
There are different models that take Colt .38 specials. Go to proofhouse.com to find your model.
No
32 caliber is a little smaller then the 38 caliber
Official Police ser numbers started at 513216 in 1927. I believe you have a Police Positive Special from 1921. It was chambered in .32 Colt, .32 New Police, .38 New Police and .38 S&W, .32-20 and .38 Special.
Proofhouse.com has Colt sn data.
you will have to call Colt with the sn to find out.
You will have to call Colt with the sn to find out.
A letter from Colt will get you started.
I found a Colt diamondback with that serial number made in 1971.
Some were made in .38 Colt New Police caliber.
You will have to call Colt with the sn to find out
You will have to call Colt to find out.