This French taxe or postage due label, inscribed “TAXE 0,15 SANS VALEUR,” was part of a special series issued by the French postal administration between 1949 and 1953. The bold magenta numeral and brown frame signify a nominal tax value, though “SANS VALEUR” (meaning “without value”) indicates that it had no actual monetary denomination for postal use — instead, it was employed for accounting, training, or test purposes. Such stamps are sought after by specialists in French fiscal and auxiliary issues for their distinctive minimalist typography and unusual “no-value” inscription.