Rare registered FDC with the 4 stamps sheetlet International Year of Children and Pablo Picasso Centennial 1981. With 2 back postmarks from Lisbon, Portugal, hub for all mail from São Tomé to foreign countries. Very rare in this postally used condition. See images.

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.