50 Francs / 10 Belgas

The Belga was introduced in 1926 as a trade unit equal to five francs, an accounting convenience designed to simplify exchange calculations with Belgium's major commercial partners. Printing this denomination with both valuations was a practical necessity during the transitional years before the franc's role was quietly sidelined.

Anto Carte was a Symbolist painter, an unusual choice for a banknote commission — his involvement likely accounts for the note's reputation as one of the more artistically ambitious Belgian issues of the interwar period. Minguet and Poortman were both experienced intaglio engravers at the Institut de Gravure, and the combination kept production within Belgium rather than routing it through foreign security printers.