Originally Posted by Drew Hause
I have never seen a monobloc British barrel, nor damascus tubes (3 Iron 'British Best') joined to damascus breech. Is the maker R. Grove?

[Linked Image from photos.smugmug.com]

\[Linked Image from photos.smugmug.com]

The proof marks date to 1875-1887 and H. Pieper's patent (using a steel breech) was 1881. The initial patent had the tubes inserted from the breech with a step from breech to barrels.
Pieper Modified Diana (no step and "Washington" tubes inserted from the front) with steel breech

[Linked Image from photos.smugmug.com]

I'm not sure that this link works but I have an Enos James 12g BLE from about 1910 which does indeed have sleeved steel barrels on a damascus breech.
https://imgbox.com/gallery/edit/OL3Kci6Dxr/T607YX6WFGSVdW0w

As our language becomes impoverished,,our thinking shrinks to fit.