The envelope had four stamps in total - two from the 1930's, one from World War Two and the 1918 Inverted Jenny.
There was no return address on the envelope so it will not be returned. It's assumed that someone with a failing memory was looking for stamps in a drawer or somewhere, and accidently used the valuable stamp.
The Jenny was named after the Curtiss JN-4 World War One trainer. A very small number were accidently printed with the biplane upside down on the stamp which makes it so valuable.
The ballot was disqualified because it contained no identification.
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