Please measure the length of the action from the breech face to the middle of the pin. Be very accurate.
Show a picture of the under side of the fore end.
The square cross bolt is a very good clue. As is the three digit serial number and the Berlin address of the seller.
Best,
John
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Humble member of the League of Extraodinary Gentlemen (LEG). Joined 14 March, 2006. Member #1.