You find a published list of serial numbers for the maker.
You find a book with serial number information and look it up. You find a book with serial number information and look it up.
Try Proofhouse.com
Look up the serial number.
You will need to call Colt
If data has been published, you look it up.
1 - find serial number on weapon 2- find book with serial number data for weapon you have.
IF YOU CAN REMOVE THE HANDLE THE SERIAL NUMBER SHOULD BE THERE. YOU CAN TAKE THE GUN TO YOUR LOCAL POLICE DEPARTMENT AND HAVE THE GUN REGISTERED OR SEE IF THEY HAVE A PROGRAM WERE THEY BUY THE GUN.
If sn data has been published, you can look it up.
Get the serial number Get a book on the comapany that has Serial Number data or a book that has serial number data, i.e., Blue Book of Gun Values.
try: proofhouse.com/colt/index.html
You find a web site or book(s) with sn data for the weapon you have and look it up.