In 2015 the Hrvatska pošta produced a stamp honoring the eighteenth-century Croatian composer Luka Sorkočević, inadvertently illustrated with an image of the U.S. president Thomas Jefferson.
The mistake was discovered just before the stamp’s release, and the entire run was withdrawn and destroyed, though one post office had sold 22 examples of it prior to the release date.
In view of the events and given the fact that apparently no copies had yet reached the philatelic market, a 2018 advertisement from the auction house Barac & Pervan noted that this stamp should become widely sought after; and since this rarity is also important for the American philatelic market, its value is expected to increase over time.
This according to “Unissued stamp from 2015 supposed to show Mr. Luka Sorkočević” (Barac & Pervan 2018). Below, one of the composer’s symphonies.