Ruger's website has a sn search you can use. Value will depend on condition, box, papers, accessories, etc.. It could range from 100-400 USD
300
1966
Impossible to value on just the serial number. Call Ruger and they will tell you how old.
100-300 or so
Depending on EXACTLY what you have and the conditon, it can range from 75-500 USD. ruger .22 cal single six
SN data is available on Ruger's website.
Ruger.com has sn data. Check the auction sites for ones in the same age range.
RUGER PISTOLS ARE GOOD GUNS, ABOUT $600
About $250-$275
100-300 USD
100-1000 pending a detailed description.
100-400 or so