1899, Poseidon's Trident with Stars, imperforated proof of 2m rose in block of four with design of 1g violet printed on reverse, small oil spot mostly on margin between stamps and light fold is affecting top left stamp (bottom pair is completely all right), no gum as produced, NH, VF appearance, expertized by V. Spanos (Image)

1899, Poseidon's Trident with Stars, imperforated proof of 1g rose in top sheet margin block of four with double printed design of 1g blue and 2m violet on reverse, perfect quality, no gum as produced, NH, VF, expertized by V. Spanos (Image)

1899, Poseidon's Trident with Stars, imperforated proof of 1g green in top left corner sheet margin block of four with double printed design of 2m green and 1g green on reverse, fresh condition, no gum as produced, NH, VF, expertized by V. Spanos (Image)