The bottom of the stamp reads: "Posthumus Amst." This stamp is one of a complete collection of original [Great] War Poster-Stamps designed by Lodewijk Schelfhout. All but one stamp is signed in full by the artist. Each stamp is 7x5 cm. The stamps were designed and sold for the benefit of War-refugees (mainly Belgians) staying in the Netherlands. Lodewijk Schelfhout (1881-1943; painter and master on dry-needle engraving) was a son to the famous ice-scenery painter Andreas Schelfhout. Lodewijk shared a studio in Paris from 1903 onward with Piet Mondriaan, and was strongly influenced by him. Later he turned to cubism and these stamps and his later work are excellent witnesses to this period that lasted almost to the end of his life. His dry-needle engraved oeuvre is massive, always printed in a few copies of very high artistic quality. Along with the stamps, a carte-de-visite sized original card with text printed on verso includes the German translation of the Latin titles printed at head of each stamp. The original envelope which contained the stamps reads: "Oorlog-Sluitzegels naar ontwepren van Lodewijk Schelfhout: verpakt onder het merk: Posta: Wittig Gedeponeerd: Serie van 6 stuks 10 cent."