100-500 depending on exactly what "good" translates to when examined.
You need to contact Ruger. You may have a prototype
50-500
100-650 or so depending on specifics
Alex Sturm and Bill Ruger started selling pistols in 1949 using a red eagle logo that Sturm designed. When Sturm died in 1951, Ruger changed the logo to black to mourn his friend. Approximately 25,600 psitols were sold with the red eagle logo. If you have a pistol manufactured during those few years, it is valuable ($525 according to one book) and estimating its worth is beyond the scope of this site. You should contact an advanced Ruger collector to verify its authenticity and estimate its value. The original box can add $750 to $1500 to the price.
100-1000 USD
250 USD
100-1000 or more depending on the exact specifications
100 or so
100-1000 USD
1000+
100-1000 USD or so depending on EXACTLY what you have.
$100-$430 or so, depending on condition. USD - United States Dollars