A Ruger 10/22 with that serial number was made in late 1970. This information is available at Ruger's website, www.ruger.com.
Ruger has extensive serial number information on their web site.
Check the receiver and barrel
Ruger's website has a serial number look up function you can use.
100-1000 USD depending on specifics
10-200 USD or so
50-200 USD or so
Value is based on EXACT model and condition. Anywhere from ABOUT $125- $190.
it is worth ..............$$$$
Yes, Ruger made them
50-200
What exactly are you asking?
Ruger.