Antique 1940s Small chocolate Fish mould / mold metal cast, made in a France professional chocolaterie Matfer

Antique 1940s petite chocolate candy Fish mould / mold metal cast mould, made in France
Used by a professional chocolaterie specialist.
This is his old molds.
Made by Matfer.
Made in France.
It measures approximately 13.6 cm by 6.3 cm or in inches it is 5 3/8 inches by 2.5 inches.
There is some superficial rust which is in the surface.
It has been used before in a chocolate shop here in France.
Tin lining.