Issue of 4,000 shares only.

Galvanisation is the process of applying a protective zinc coating to steel or iron, to prevent rusting. 

It was named from the name of an Italian scientist Luigi Galvani. But most of patents were developped by a French chemist Stanislas Sorel around 1840.

Bearer share of 500 francs issued in 1838 in Paris.

Authentic document printed on fine paper. Rare !