three 'Servicio Oficial' 1E blocks

These three blocks are good examples of three of the 1E papers (left to right, 50c1E2, 1p1E3, and 25c1E4)



The first block, of the 50c1E2, has two minor overprint varieties.



Top left stamp



Bottom left stamp



The block of the 1p1E3 has splattered ink for both plates.