Portugal 1984 Business reply service document to pay the RSF (Resposta Sem Franquia) postage paid fees franked with stamps, including Madeira dancing O Brinco, postmarked with RSF Lisboa uncommun date cancel. See image.
Registered mail Europe $7, US and worldwide $8.
Postage costs
always combined for several items purchased within same invoice, no additional shipping charge up to 100g.