70mm chambers; choked, proofed in 9/1957; has the highest quality mark(Q1) stamp on the left side of the rear lug; has the Gebruder Merkel stamp, Austrian Boehler tubes( http://www.bohlersteel.com/english/b_277.php ) and an interesting "Wolchlot???" stamp under the steel type; has the symbol of Suhl being a shield with an ore tub in the form of a footprint with an axe/hoe/pick; Kersten lock-up; probably made of mostly pre-WWII components.

Kind Regards,

Raimey
rse