No way to find out.
Ruger has sn data on its website.
400
100-1000 USD depending on EXACT configuration, box, papers, condition
You need to contact Ruger. You may have a prototype
100-300 or so
100-400 or so
100-400 or so
100-300 USD or so
100-500
100-1000 or more depending on the exact specifications
50-1000 USD or more depending on specifics
100-1000 USD or more depending on specifics