

From €1.50. Free shipping from €40 in France.
View of the hot spring in Dax, indicating a temperature of 64 degrees Celsius and a flow rate of 2.5 million liters per day. The reverse features a handwritten letter addressed to Madame Seduir in Paris, with a blue 40-centime postage stamp and a postmark from Dax dated July 26, 1908.