The cover received US and German censorhip. The stamps add up to 1.65 pesos. The cover is supposed to have travelled to South Africa (Natal), then to Bolama off the coast of Guinae-Bissau in West Africa, then to Portugal (was the US censorship applied in Portugal?). There are no markings enroute.
The 50c airmail is consistent with a clay printing.
The 30c and 40c values should be 1E3.
