My dad called last night letting me know that a family gun would be passed down to me in the future. It is a Colt .38 Detective Special. The serial number is 20074M. I have tried to look it up and continue to get conflicting data. If someone could help me figure this out I would really like it. I know the gun is at least pre 1974. It was my great uncle's and I am sure owned it during the 50's. He was born in 1912. Thanks for all the help.