Might you pleasure us with some fotos of the proofmarks, if any?
Collath - Teschner's eccentric tipping breech platform was / is limited to lower pressure cartridges, so I don't think I would necessarily associate this 24 bore platform to the 600 NE, unless the 600NE pressure was tolerable. Who knows, Collath - Teschner may have made such ammo? So I would check their ammo line? Last, 24 bores seem to gravitate to the Austro-Hungarian Empire and maybe a skosh further East. Who would have ordered such a 24 bore chambering in an eccentric tipping breech platform and what was the desired use, i.e. what quarry was he chasing? The spectacular condition of the 24 bore DR is probably due to the fact that when the original custodian ignited his stash / lot of 24 bore cartridges, additional ammo was scarce at Best.
Serbus,
Raimey
rse
