Hi,newbie here so please bear with me. I have several ruger revolvers,old style new style, old style brass frame, etc. Normally, with blue book of gun values ,etc. it is pretty easy to come up with an approximate value, but one gun has me stumped. It is a ruger blackhawk convertible in stainless. Not one of the new ones that Wiliams had produced, but an an original 1974 model, serial 32-56xxx. According to H. W. Ross Jr. , in his book "A Blacksmiths Guide to Ruger Flattops and Super Blackhawks" he thinks thst possibly only 20 or so of these guns were produced. So, my question is, has anyone ever heard of one of these guns being sold and for how much. I can't find any info at all. Thanks...and I wish I was smart enough to post pictures