TP barrel

[jeffs]

Please find attached a picture of the barrel. One of the reasons I am confused is that neither the barrel nor the byf toggle train appear to have been dipped in the Russian black gook, which the rest of the pistol clearly has been. Here is what I am speculating for the history of the pistol.

Around 1920, transferred to police use, judging by the evidence of a past Schiwy safety.
The TP barrel some time 1935 of after, since that is when the superimposed TP was created (when the police academy in Berlin changed its name to the Technische Polizeischule)
1941 or after, the toggle train.
1945 or after, the Russian dip
Some time after that, to the VoPos, as shown by the obliterated VoPo sunburst, the replaced, the new grips, and two 2/1001 magazines numbered to the pistol (1912 DWM, #1450)

THe mystery to me is: Why doesn't barrel have the Russian dip?

The surface of the pistol is in terrific condition.

Thanks,
Jeff