1924/25 - Italy: Advertising stamps 25c blue and brown "Piperno", 2 pieces, 25c blue, PO, vertical pair, 1 Lira franking, composed of "twin'values", son cover to Tunisi and cancelled with a bouble circle cancellation "ROMA-FERROVIA 21/11/1924" used notwithstanding the rules that do not allow to use the advertising stamps for foreign destinations. Sorani certificate (Sassone 6-PO 83 - € 10.000)
