Newfoundland 1919 3c. brown HAWKER overprinted "FIRST TRANS-ATLANTIC AIR POST APRIL. 1919, initialled in ink "J A R" ( J A Robinson, the postmaster General) on the reverse, SG142.
A fine mounted mint example of this famous stamp rarity.
Just 200 examples were overprinted as franked correspondence carried by Lieutenant H. Hawker on his Atlantic flight. 18 were damaged and destroyed, 95 were used on letters, 11 given as presentation copies, and the remaining 76 surviving mint examples were sold in aid of the Marine Disasters Fund.
The SG catalogue value is £22,000.