Hello,
Thank you Tom for the info. Actually not all the Mauser Parabellum show this internal numbering - why?
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I have moved hee some more info that are also available in the aforementioned topic to help the discussion.
Gerben pointed out that his 1972-and-a-half variation has the rear toggle link engraved (see pic):
In addition Dave (Ponyman) wrote that his 29/70 has the rear toggle engraved too.
Please Gerben and Dave can you check if there are some other parts engraved in your pistols.
Thank you for the info.
Ciao
Mauro