The 16th $10/$20 double-denomination error known resulted when a sheet of three $10 notes and one $20 note was inverted between the two printings of face and back. A companion $20/$10 note would also have been printed, but is unknown.
1 Lepto. (1848)(typ. III) with "ΒΑΣΙΛΕΙΟΝ ΤΗΣ ΕΛΛΑΔΟΣ" in copper. Slightly corroded & the second digit "8" on date, is double. / MINTAGE:84600 PIECES.(THE LOWER QUANTITY) This coin is one of two rarest, 1 lepto of otto period. But the most rare in any condition. (OUR OPINION).(HELLAS 35) Very Fine
Coin Reverse - Double Eagle. The most valued gold coin in the world: The famed 1933 Double Eagle $20 gold coin. One sold for $7.6 million at a Sotheby's auction in 2002 Double eagles were first struck in 1850, feature a flying eagle on one side and a figure representing liberty on the other.