To the best of my knowledge Ruger never made it's old army revolver in .36 cal, only .44 and .45 caliber. Many other manufacturers made a similar looking Remington copy in .36, it could be one of those.
200 USD
Ruger. 20-250 USD depending on specifics
At least 400 dollars,I purchased one new at a gun show for about that much...little moreThey are rare and they are nice
100-400 US Dollar
50-350 usd
Blue Book of Gun Values
Ruger's website lists the current offerings.
You need to contact Ruger. You may have a prototype
it is not a revolver it is a pistol and it can range from 1,000 to 2,000 us army depending on the condition.
50-200 USD depending on specifics
100-300 or so
Ruger website, customer service, historical data, revolver, single six, find your serial number.