Auction 309-320 - Europe & Overseas Egypt, including the Constantin Kelemenis - Day 4

First Issue 1866: 10 pi. slate, wmk. upright, perf. 12½, an unused example (position 8), showing variety "White hole below "P" of "PE" at lower right", fine deep shade, unused without gum. Signed E. Diena, Todd AIEP. Cert. Hass (1999) Nile Post D7a = $ 500 / Gi = £ 375+.