PeteM, look here. The 7-th line from top.
http://pagesperso-orange.fr/mallorquina/source/recherchedesmarques.htm

Acier Comprime <eagle head> - one of the J.Cap' signs on barrels. Don't know, when this trademark registered, btw maybe not registered.

Don't know why you posted Clement' trademark, I don't see Acier Comprime over there.


Geno.