I happened to see this at a local shop in the for sale rack.
The shop owner was nice enough to let me shoot some photos
with my cheap camera. So please excuse the photo quality.
This rifle is a combination rolling and falling block. I
have never seen another even remotely like it.
When you lower the underlever, the breech block drops
streight down about 1 cm and two locking lugs retract from
the barrel extensions. Then as you move the lever further
to the front,the breech block rotates away from the barrels
to expose the chambers and allow the extractors to operate.
It would be a very difficult action to make and get the
timing correct on all the pieces and parts moving at once.
The barrels do not tilt, but are removable when you take
the forend off.
I didn't get a very good photo of the proof marks. German
Nitro with "108/49" stamped next to the marks.
Specifications;
Cal: 9.3x74R (no indication of bullet weight)
Weight: 9 lb. 6 oz. with scope
Greener style side safety.
Barrels: 25 1/2" (65 cm)
Sights: 1 standing, 1 folding with a bead front on a full
length rib. Claw scope mounts. 1" rings. Leupold 1-4 VXII.
Stock: 14 1/4" LOP over a 1/2" leather pad. Steel grip cap.
Front trigger is single set.
Maker: G. Kersten, Strassburg, Germany

If anyone would like further info. on this, let me know and
I'll check on it before this disappears from the store.
No, it is not mine and I have no interest in it other than
a love for doubles.
And many thanks to Capt. Curl for taking the time to post
the photos
Good Hunting
Raff