Wonderful patina built up over years of use, this cake or even soufflé mould by French marque Gaufrex would be the perfect addition to your French kitchen. 
The Gaufrex logo is in mirror image from the outside so would appear on your gateau; everyone would know you'd chosen the best. 
Perfectly useable for its intended purpose or just the right size for popping bits and bobs in. 
Approximately 17 cm diameter and 9 cm high. 

Gaufrex vintage mould