Can't figure that one about the pin-fire, Damascus. As far as guns are concerned to be 'antique' here they have to be pre 1939, of obsolete calibre and not intended to be used. I have a couple of centre fire 24 bores that are pre 1939 and can be classed as antique and not needing a certificate to possess even though Fiocchi still make ammo in 24 bore. I do have them on certificate but only because I shoot them.
I would like to know the maker of pin-fire cartridges in France; especially the cases for reloading.
This is from Diggory's website: I don't think he'll mind me reproducing it.
https://www.vintageguns.co.uk/articles/obsolete-calibre-list/ Lagopus.....