What is the process for buying a handgun that was never catalogued and has no serial numbers? It is legally owned and was manufactured for the government so they never had a serial no. stamped on them. Will the police scratch a number into it therefore diminishing the value? Is there a place to look for a serial number on a revolver that is not visible while the gun is assembled? I won't buy it if the police are going to deface it. I don't even know if the owner is willing to sell but I was curious about the options I have.