1917-1918 3c José de la Luz Cabarello Trial Colour Plate Proof in Green, instead of the issued violet, with an inter-panneau block of 8, one vertical and one horizontal (with light internal wrinkle). Very fine and scarce. (Image)

Est $ 200

1939 1c Ciboney Indian and Cigar Trial Colour Plate Proof in Brown Orange, instead of the issued yellow green colour, a plate number inter-panneau margin block of 8, on watermarked paper, light wrinkling in margin, very fine and scarce. (Image)

Estimate $ 150