Hello folks! Recently I got a Walther P38 stamped 01/59. The slide is parkerized, and the frame is light, indicating that it is made of alloy. The gun even has one of the earlier thin slides with the slide serrations behind the decocker lever. While the P1 designation was not used during the 50's and 60's, the P1 features are present in this gun. So what is the proper nomenclature for this pistol- P38 or P1? Thanks folks!