Tierra del Fuego 1891, Julio Popper's private mail stamp issue: Colour proofs 10 Centavos orange, miniature sheets of 4, perforated 11½, at top inscription "PRUEBAS EN COLOR DE LAS PREMERAS ESTAMPILLAS DE LA TIERRA DEL FUEGO..:", unused resp. the stamps mint never hinged, partly strengthened by hinges, small marginal imperfections, rare (Image)

Tierra del Fuego 1891, Julio Popper's private mail stamp issue: Colour proofs 10 Centavos, two horizontal pairs in red and brown plus single in blue, also black plate proof with red circular handstamp and in addition  the issued stamp as single and as block of six with double horizontal perforation, a fine and scarce group (Image)

Tierra del Fuego 1891, Julio Popper's private mail stamp issue: 10 Centavos red, corner marginal block of 20, position 68 with distinctive flaw and retouch to the area around the "E of FUEGO", in addition two blocks of four with upper sheet margin, one with inscription "KIDD y Cia LIm. Sn MARTIN 35l" and a used example, the multiples mint never hinged, small part of margin missing, fine (Image)