Thanks for the effort fellas. So I guess there were at least 3 Acier Comprime trademarks:
Acier Comprime Cap w/ Chicken Hawk head - Joseph Cap
Acier Comprime de Wahlreyne - Ferdinand Courally & Webley, Lebeau - Courally
Acier Comprime de Wahlreyne Rust Proof( probably on the order of Polid's Antikorro) May 6th 1913 - Webley, Lebeau - Courally.
Acier Leugrann & Metal Vant Horn - Webley - Lebeau - Courally 17 Rue Fond des Tawes, Liege
http://mallorquina.pagesperso-orange.fr/source/recherchedesmarques.htmhttp://mallorquina.pagesperso-orange.fr/source/pageS.htmI guess it to be some alloy & possibly some alloy with a nickel or tin component.
I wonder who was rolling it for them? J. Novotny also had similar type steel trademarks/stamps.
J. Nowotny's Special steel
Kind Regards,
Raimey
rse