A minor point. The pre-WWII and wartime pistols were designated and marked "P.38" with the period. Postwar guns made for the commercial market were designated and marked "P38" without the period. P1 pistols were designated and marked "P1" without a period.
FWIW, possibly the most accurate CF pistol I ever fired was a mixmaster wartime P.38. I don't know how it happened but that gun had parts from at least 4 other pistols from all three makers and it shot one hole at 10 yards, right dead on the sights. Had it been mine, I would have kept it, even though collector value was negligible.