The added side plate images show that it is neither Swiss nor PW Mauser, which, incidentally isn't that hard to figure out when one would learn to read his own manuscript
Tom was right that the Swiss and PW Mauser side plates will not drop into a P08 without modification.
The top rim of the 06/29 and MP sideplates is thicker because of the absense of the protective ridge above the sear bar.
A P08 Side plate fits a PW Mauser without much problems, but will usually need quite a lot of tinkering to work on an 06/29. The Mausers are a bit more 'tolerance friendly'.