Yes
No
You can get a manual for free at Ruger's website.
Depending on EXACTLY what you have and the conditon, it can range from 75-500 USD. ruger .22 cal single six
In .22 cal it's rated at 1000 FPS
22 mag rimfire. say it on the gun.
Ruger's website has serial number data on its products.
You need to contact Ruger. You may have a prototype
50-200 USD
Impossible to answer without more information.
Ruger Single Six
SN data is available on Ruger's website.
Depending on EXACTLY what you have and the conditon, it can range from 75-500 USD. ruger .22 cal single six