SA founders on medicine pioneers souvenir sheet.
Issued 01.12.2008
Postmark: “Primeiro Dia” PM
Cachet: Official PO – Variant I – Pioneers & descriptors of science cachet
Stamps: Michel 3965 – 3970 & souvenir sheet. This sheet is imperforated. The SA stamp is Michel 3966
Size: 230 x 162 mm