

From €1.50. Free shipping from €40 in France.
Interior view of the Han Caves in Brussels, showing a room with stalactites and a stone staircase. Printed text at the bottom: 'Han Caves', 'Vigneron Hall', and the publisher's signature F. Deligny. Back: handwritten address to Monsieur Simonet in Valenciennes (Nord), 50-centime green stamp canceled in Brussels on 12–20.