I have a local dealer who has a 6" Python, blued, serial number 28000 (about 1962?) and the gun looks sharp, there is barely a cylinder ring, no box or papers, stocks not beat up, in fact, hardly a mark on the gun. Does not appear to be a reblue (he says all original) and he wants $1,500 for it. Is there anything in particular I should do to check it out? $1,500 is a lot of money to me and I do trust the dealer but he doesn't handle a lot of high dollar Colts....