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
22 mag rimfire. say it on the gun.
In .22 cal it's rated at 1000 FPS
50-200 USD
Ruger's website has serial number data on its products.
You need to contact Ruger. You may have a prototype
Impossible to answer without more information.
Ruger Single Six
Between 50-75 dollars.
it stands for Winchester Magnum Rifle.....it takes a 22 MAG BULLET