I am trying to find out more about a revolver that my grandfather has. It is a .38 S&W special CTG with a serial number of K690809. The story is that my great grandfather had a customer at a local store and the guy didn't have enough money to buy something so he told him he could hold on to his gun until he got back and if he didn't return the gun was my grandfathers. Well obviously the guy didn't return. He said he was a cop out of California or something like that. Inside the revolver it has the numbers 34669 as well. If anyone knows value that would be great too. Would appreciate any any information.