Hi, I just purchased a S&W 640-1 and was wondering if someone could provide me with the DOB for serial #CBB38XX. Thanks!

According to the 4th edition the CBB prefix was assigned to 1996.

Jingles is correct however, I think we can nail it to 96 or early 97 because the 640-2 was Reintroduced in .38 special in 97. The next change was the introduction of the internal key lock on the .357 Mag. in 2003 as change 640-3. I'm sure someone more knowledgeable than us will come in to confirm our data or add new data to what Jingles and I have said.

Thanks to both of you!!