The Mazoyer concern developed from a motocross racing team. René Mazoyer built 500cc motorcycles 1951-1953, possibly other models and years.
Models included the roadgoing 500cc lèche d'Argent (Silver Arrow) which had a very British appearance but used entirely French components including an Aurora dual seat.
His son Raymond Mazoyer says that in total nine machines were constructed. This figure possibly includes the Matchless-based early motocross machines, as another report says that only five of the fully French bikes were built, one a Cross version.
Marius Mazoyer built the Métalloplan 1901~1929. There does not appear to be any relationship.