Some makers have sn data on their web sites (Ruger, Browning), others you can find at Proofhouse.com. Others will require you to buy a book or go to a library.
2523497
2523497
30007A
763844
3321600
3321600
1793218
You find a published list of serial numbers for the maker.
Ask your local police to run it.
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.
No. Some manufacturers have resources available to look up serial numbers of firearms they manufactured, though.
S&W factory 1 800 331 0852
The Blue Book of Gun Values or online at oldguns.net
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.
Look up at proofhouse.com
You will need to call Colt
If data has been published, you look it up.