50th Auction Anniversary Auction - Day 3

Neufundland - Flugpost: 1930 St. John's supplementary mail of the "Columbia" sent by St. John's Post
1930 St. John's supplementary mail of the "Columbia" sent by St. John's Postmaster General Miley (Coat of Arms envelope) to his opposite Postmaster General London, franked 50c. (20+20) as required, tied by machine datestamp at 25th Sep. 1930, and on the reverse with Harbour Grace '9 Oct 1930' c.d.s., fine.