I saw this listed on Gunbroker as a S&W model 1917. I contacted the seller twice, telling him what I thought it was and expressing concerns that there were no markings on the pistol that I could see even though his pictures were very clear. Especially the missing serial number on the butt. He said "let the buyer beware". With no serial number I wasn't bidding no matter what it was. I think it went for $780.00. Any thoughts or opinions?