100-600 or so
50-600 usd
Ruger.com has sn data on their website. Once you know how old it is, value can be estimated.
Impossible to answer without the serial number. You can, however, call Ruger or visit their webiste and find out.
1971
No such Ruger ever made
50-525 USD or so
50-550 usd
Can't be answered with just that information. Which Ruger?
Can't be answered without the maker's name
Not a complete question.
100-300 or so
Zero. Ruger never made the P38.