I thin that my PRE 39 serial number 1369 9MM Automatic which I have owned since its delivery from the factory to Rex Firearms can possibly help educate a bit more to those who seek more information.
The box calls it 9MM Automatic on the ends ( no pasted on labels).
Bottom of the box shows serial number DA and AIR.
The picture on the booklet shows a pistol with serial number X140.
I am going to try to add the pictures..if they don't come out, contact me at
[email protected] & I can send pictures. ( Pictures have a blur on the left side of the frame to cover my engraved name on the frame.