Share of the Société Générale des Poudres Gacon, a public limited company established by deed passed before Maître Marot-Delaquerantonnais, notary in Paris, in December 1883. Share capital of five hundred thousand francs divided into 1,000 fully paid-up shares of 500 francs each. Head office at 15, Chaussée d'Antin, Paris. This company operated the Gacon processes in the field of industrial and chemical powders, a booming sector in the France of the Third Republic, where the chemical industry supported the country's rapid industrialization. The certificate's design is deliberately restrained: a black engraved border with fine floral motifs, without figurative iconography — a sober Victorian elegance typical of bourgeois industrial companies of the period. Bearer Share of Five Hundred Francs no. 818, dated Paris, 4 December 1883, two signatures (directors), two fiscal stamps affixed at the top left. A valuable feature: an attached coupon sheet beneath the certificate, perfectly complete, numbered 818. Very fine condition, aged yellowed paper with a patina, sharp printing, coupons intact. An interesting piece for collectors of early industrial scripophily or the history of French chemistry.