Red Mercury (newspaper stamp)

Red Mercury
Country of productionAustria
Date of production1856 (1856)
Nature of rarityFew exist
No. in existenceunknown
Face value6kr – 30 centesimi
Estimated valueUS $40,000

The Red MercuryZinnoberrote Merkur, lit. "vermilion Mercury"is the rarest of Austrian newspaper stamps. It was issued for the mailing of newspapers in Austria and Lombardy-Venetia.