Very nice Jones Underlever /Lefaucheux Platform w/ the 1873 Deeley & Edge forend fastener from the man of the House of 1000 guns. Yes indeed, the right tube has >>Hair Rifling<< or "„Haarzüge“. I can't say for certain, but with the >>Pour<< in the text on the top rib, components or a platform from Liége. I am quite confident though that the stamps on the flats are those of the Ferlach Proof Facility and are a result of the November 25th, 1882 Imperial & Royal Provincial Government degree. Upon arrival @ the Ferlach Proof facility the diameter was measure and then the 1st proof. The diameter is on the right flat & the mark of the 1st proof(EF)(maybe EP for Prag??) was applied.
I can't fully read the text on the top rib but it is some like J. Novotný Fabrikant Pour........ So Novotny made it for another retailer.
Lovely cupped hammers.
https://www.doublegunshop.com/forum...mp;Words=hair&Search=true#Post662403An Austrian Cape, 2 Barrel Set, with Hair Rifling, of which I am a Custodian.
Hochachtungsvoll,
Raimey
rse