[Linked Image from thumbs2.imgbox.com]
Neat that the frame too has to mate w/ the Octagonal nature....

[Linked Image from thumbs2.imgbox.com]

[Linked Image from thumbs2.imgbox.com]

[Linked Image from thumbs2.imgbox.com]
Most interesting forend latch. There looks to be a stamp of >>H. Barrella ..... BTe<< on the flats??


https://bestguns.de/Auktion/2704/Hahndoppelbuechse-Barella-Achtkantlauf-in-Damaststahl.html

Evidently similar to this H. Barella that wears the Crown over V(Vorrat) or on-hand stamp which dates it to early 1893. Originally it was Kaliber .500 BPE then atlered to 28 Bore @65mm. Patterned welded rifled tubes are almost as scarce as hen's teeth.

Hochachtungsvoll,

Raimey
rse