I just bought a 3914, reportedly new old stock. I was told the serial number was a personal serial number of an employee that worked in the Houlson Me. plant. Ser, No. TDF0059.I found another photo of a 3914 that was for sale on Guns International that ser.no. TDF0082. Reportedly this employee, was a floor manager and all his guns were numbered TDF0059. Does this ring any bells with anybody on the forum. I don't have the gun in hand yet, it's due to be delivered in a couple of days....

Previous discussion of TDF serial prefix - S&W 3914 prototype ?

Thank you for your response. I appreciate the info