100 to multiple thousands of USD depending on specifics
No published sn data I am aware of.
I don't exactly know the answer, however, I have Carl Gustafs Stads sn 60992 that is dated 1915. I would therefore assume because you have a lower sn it would be 1915 or before.
No sn data published in the this country that I know of.
Bought in 1975 Serial Number 40 - - -
1915
About 1915
The phone number of the San Luis Obispo Childrens Museum is: 805-544-5437.
150 USD
100-1000 usd
10-1000 usd
if a police positive, then made about 1915
A Colt 380 hammerless with that serial number was made in 1915.