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No such model ever made by S&W. You have an inexpensive copy. 10-50 USD or so
Ruger website, customer service, historical data- and you need the MODEL of the pistol. Your serial number indicates that your Ruger pistol was made in the year 1976.The ending serial number for that year was 13-48646.
The lower the serial number the younger the pistol is
See the Browning website- customer service. Date of production by serial number listing.
Go to the Ruger website. Customer Service, historical data, pistol, your model, and check serial number range.
The PY in the middle of your serial number dates your pistol to 1982.
Proofhouse.com
You will have to call Colt with the serial number to find out.
Impossible to answer without the serial number.
Browning.com has sn data under customer service.
No way to answer without the serial number.
The brand is Sturm, Ruger, not Strum- and we cannot tell without a serial number, However, if you visit the Ruger website, look under customer service, historical data, pistol, you can find your model, and the serial number range for year of manufacture.