Go to the Ruger website- customer service, historical data, pistol, find your model, and the dates of manufacture are shown for different serial numbers.
Impossible to answer without the serial number.
by serial number
50-125
$100-$250, dpending on condition.
You can look up the serial number on ruger's website
A call to Ruger will get you the answer.
Sturm, Ruger was founded in 1948 by William Batterman Ruger with a $50,000 stake from Alexander Sturm, a family friend and gun collector.
Contact Sturm/Ruger and ask for an archive check. Sometimes a small fee is involved.
150 USD
100-300 USD or so
You will have to call Ruger.
No way to answer without the serial number.