The serial number on the barrel is on the back end where the barrel latch is located. The numbers are very small and are stamped between the " ears". The bottom of the latch should also have the serial number stamped there. The top of the barrel should say "Smith & Wesson, Springfield, Mass." and may have various patent dates. "Fred to Kittie" adds a lot of character to the gun! The stocks are pearl. Now you have the project of finding out who Fred & Kittie may be! I once had a similar S&W with the a lady's name on it - turned out she was a famous madam in a west Texas House of Ill Repute! Ed.