1875 - 6 Postage Dues - Lepta in small letters 2l, 5l, 10l, 40l, 70l, 80l and 1d & 2d; Lepton / Lepta in large letters 1l, 20l, 60l, 100l, and 200l each overprinted Specimen in red. This is the complete UPU distribution for Greek Postage Dues overprinted specimen. See - “UPU Specimen Stamps 1876 - 1961” BY James Bendon.