Greece - postal stationery: 1900, "Flying Mercury", 5lep. orange-brown, printed
Greece - postal stationery
1900, "Flying Mercury", 5lep. orange-brown, printed as a stamp, proof sheet of 25 stamps with line perforation 11¼ (rough/uneven perfs at right) on gummed paper with watermark "honeycomb", showing curiosity "imperf. vertically between 2nd and 3rd column from left". Most unusual and...