I don't see anything really that would point to German sourcing, maybe Brno or Vejprty??? But the action is an advancement of the A&D Action Body by William Anson who first sought protection in 1882 under Nr. 4089 in Britian,

http://www.google.com/patents?id=58lCAAA...882&f=false

http://www.doublegunshop.com/forums/ubbt...true#Post337375
Dig's intercepting thread

And it was refined by H.A. Lindner of Suhl, as it was his staple, with the interfaces being more sculpted and not so blocky. Francotte also peddled some variants. This one looks home grown in Izhevsk.


Interesting that they do seem to follow German convention with NITRO/НИТРО low on the flats.

Kind Regards,

Raimey
rse