Castagain

Hello all, this is my first post on the Forum. I am a WW2 para insignia collector, and I'd like to understand how Mourgeon and Arthus Bertrand marked their badges and insignia in the time period 1937-45. I'm hunting for some of the pre-war parachute unit insignia (Section de Parachutistes, 601e GIA, 602e GIA) made by these two companies. Any advice you can provide on these insignia would be much appreciated. Regards, Donovan