Auction 333-341 Nigeria, Cameroon, Sudan & Worldwide Postal History - Day 4

1914: Postal Card, ½ d. green, uprated with 1 d. red, used from Port Harcourt, Nigeria to Brno, Czechoslovakia, dated 14 March 1921, cancelled by "PORT HARCOURT NIGERIA" double circle datestamp in black. The ½ d. should have been sufficient. To the reverse an attractive watercolour painting depicting a sea view. Stain lower left otherwise fine and scarce; one of seven recorded.
Reference: The Postal Stationery of Nigeria, by Peter Hørlyck, pg. 424 & illustrated 425.