Bonjour JD,
It's certainly not my area of expertise, but I believe these badges (Commando Group) were issued shortly before the war ended as a replacement for the Combined Ops insignia. The French Commandos as part of the 1st Bat FM Commando didn't wear this badge before the unit was disbanded in July 1945.
Senée Oct 1945.jpg
I've attached a photo of 2Lt Jacques Senée receiving his Legion d'Honneur from General de Montsabert around Oct 1945 in Strasbourg. He wears the new badge.
He remained in the French Navy after the war. He was to be killed in Indochina in January 1950 fighting as a parachutist with the Army (6 BCCP).
The badge looks like a replica IMO.