Other countries–Stamps of Slovenian interest
Kingdom of Yugoslavia
,147, 150/1, P 10,
Kingdom of Yugoslavia. Cover franked with 10 para sent from Alibunar (15.V.21) to Vršac (16,V.21). On arrival 80 para Postage Due was charged in mixed franking of Chainbreakers Postage Due stamp and definitive Kingdom of Yugoslavia stamps overprinted "PORTO" with hand held cachet.