Macao 1969 Admiral Gago Coutinho - Birth Centenary

From Stamps of the World
  • Issue Date: 27th February 1969
  • one value
  • Printed by: Litografia Nacional, Porto, Portugal
  • Print Process: lithography
  • stamp format height 35mm x width 26mm
  • Perforations: 14.25 x 14.25

20avos ~ Admiral Gaga Coutinho, 1869-1959, aviator, inventor of a sextant with an artificial horizon that could be used in aircraft