semipostal means of a postage stamp, issued and sold for a higher price than its face value, with the excess monies transferred to a third party, typically a charity. Lexicurio rates it Sui generis — a strength score of 88 out of 100.
Etymology
From semi- + postal.
adj
- Of a postage stamp, issued and sold for a higher price than its face value, with the excess monies transferred to a third party, typically a charity.
noun
- A postage stamp of this kind.