My father has this old High Standard DA revolver in .22 nine-shot. I forgot what the model number is, but do know that it has "Longhorn" or "Longhorn Convertible" etched into the 9" barrel. It still has the box and extra cylinder. The only High Standards I can find online are of the Sentinal nomenclature. They look nothing like this one, as it looks similar to a SA Ruger. I had to link to a pic because of it's size. Anybody familiar with it or what it's worth?
http://www.yousendit.com/transfer.php?action=download&ufid=BDAA8BA41D42FEE9
http://www.yousendit.com/transfer.php?action=download&ufid=BDAA8BA41D42FEE9