Do a search on the "Ruger Old Army User Manual". It is a free download and will answer all your questions.
You can download the manual for the Old Army cap & ball revolver that has loading and cleaning instructions from the Ruger website (see related links) under the customer service heading.
Ruger's web site has sn data. 75-160 USD or so
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.
I bought a Ruger "Old Army" black powder revolver in 1974, which is based on the Black Hawk frame and it came in a RED box with the White Ruger logo. Most Rugers came in a box like that.
According to Ruger " The new Army is not currently in production" I couldn't get an answer as to weather or not it would be again. They also said that parts and new guns are still available from there dealers.
At least 400 dollars,I purchased one new at a gun show for about that much...little moreThey are rare and they are nice
50-350 USD or so
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.
100-400 USD
What is the value of a U S Army DA 45 revolver SN 19877
100-500 USD or so
The butt.