Egypt-A 1937 Commemorative Postage Stamp-15th Opthomalogical Congress-Illustrated

Illustrated below is the 20 Milliemes value from the set issued in 1937 to commemorate the 15th Opthamological Congress held in Cairo. The set consisted of a 5 Milliemes (brown), 15 Milliemes (purple) and 20 MiIlliemes (blue). The design was the same for each stamp and showed Nekhbet, The Sacred Eye of Horus and Buto from ancient Egyptian mythology.