Proofhouse.com has Colt sn data. If it's not there, call Colt and they will tell you.
The manufacturer is normally stamped on the firearm next to the model, caliber, and serial number.
Unsure how to work this site
A serial number is meaningless without knowing the manufacturer.
You'll have to furnish a manufacturer and model number before the serial number means anything.
mask mounted regulator serial number NF0031730EZVS
Contact the manufacturer or local distributor about why you need the serial number and how to get it.
Do a net search on "manufacturer's name" and "serial number". With luck you might find a website describing how to interpret the serial number.
Proofhouse.com has Colt sn data. If not there, you will need to call Colt.
You failed to give the manufacturer of the weapon when you gave the serial number. Follow the "related link" below for more information about serial number searches.
Not possible. Serial numbers are not unique to one maker.
1929 if a 38, 1937 if a 32.
If we had a manufacturer's name and model name or number we might be able to answer you.