AROUND $325 to $375, depending on condition, whether it is Old model or New model, etc.
Average $200-$300. Spelled Sturm BTW.
Ruger's web site has extensive sn data.
1999- or so says the Ruger website.
Ruger has sn information on their web site.
If the Ruger web site will work for you, they have sn data available.
1975
1966
If you mean a 10-22 than it's worth anywhere between 100$ to 450$ depending on the year it was made its condition etc.
Serial number history can be found on Ruger's web site at: http://www.ruger.com/Firearms/PS-SerialNumberHistory.html As far as value, it greatly depends on it's condition, and features.
The Ruger website, under customer service, hostorical data, has a date of manufacture listing by serial number.
50-350 usd
Ruger has extensive sn data on their web site, if it is up. Value could be 50-500 depending on specifics.