

From €1.50. Free shipping from €40 in France.
Postcard showing the location of the Bertha, an old circular military installation in Crépy-en-Laonnois, with a man standing on the site. The reverse has a handwritten letter dated July 13, 1902, addressed to Madame Roy in Vitry-sur-Seine, with a 40-centime postage stamp and a postmark from Thonon-les-Bains.