1652 US threepenny found in Nottinghamshire
The extremely rare New England coin, bearing the date 1652, is expected to sell for up to £1million when it is auctioned.

It has been hailed as one of the finest examples of a currency produced in the days of the Pilgrim Fathers in a land that would become the United States. How the 17th century threepenny ended up in the village of King’s Clipstone, Nottinghamshire is not known.
It was made by placing a blank silver disc on an engraved die, sandwiching it with another die for the reverse side, then hitting it with a hammer. The III in Roman numerals shows its denomination to differentiate it from tuppence, sixpence and shilling coins. Although it bears the date 1652, the oak tree on one side shows could have been minted in any year between 1653, when the original simpler design was changed to beat counterfeiters, and 1682, when a new series of coins was introduced.

Coin expert Peter Spencer confirmed it was a genuine threepenny piece from the first authorized colonial coinage, commissioned and struck in Boston, Massachusetts.
The Prospero Collection
In early 2010 a rare collection of ancient coins, called the Prospero Collection, fetched a record price of over $25 million at an auction in New York. The Prospero Collection was a spectacular assemblage of 642 historical coins by a private British collector.

Included in the collection is a coin regarded as an artistic masterpiece by experts. The coin features the head of a satyr - a character widely used in Greek mythology - and sold for $3.25 million, breaking all previous world records for an ancient Greek coin.

A Calabria, Tarentum Gold Stater coin circa 344-338 BC, featuring Head of Hera. Reverse Taras.

Silver Tetradrachm from Kyrenaika, Kyrene (circa 400 BC) bears the likeness of Head of Zeus Ammon, Reverse Silphium. It is described as a coin "of immense power and majesty."

KINGDOM OF MACEDON. Alexander III, The Great (336-323 B.C.), Gold Stater

Kyzikos (c.450-400 B.C.), Electrum Stater, Silenos, with a horse's ear and tail, kneeling to right, pouring wine from an amphora into a kantharos he holds in his right hand, a tunny below. Rev. Quadripartite incuse square.

MYSIA. Lampsakos (c.350 B.C.), Gold Stater, Head of a female satyr facing to left, with a long pointed ear, wearing a wreath of ivy. Reverse Pegasos

KYRENAIKA. Kyrene (c.331-322 B.C.), Gold Stater, Magistrate Jason. Nike, with her wings spread, in a facing quadriga. Rev. Zeus Ammon

ITALY. Calabria, Tarentum (c.280 B.C.), Gold Stater . Head of Zeus facing to right. Rev. TAPANTINΩN, eagle standing to left on a thunderbolt.

SICILY. Akragas (c.409 B.C.), Silver Tetradrachm. Nike driving a galloping quadriga to left, holding a kentron in her left hand and the reins in both, a vine with a bunch of grapes above. Rev. ΖTPATΩN, two eagles standing to left on top of a dead hare.

SICILY. Naxos (c.461-430 B.C.), Silver Tetradrachm. c.460 B.C. Bearded head of Dionysos facing to right, wearing an ivy-wreath, his hair tied in a krobylos at the back. Rev. N-AXI-ON, naked, bearded Silenos
Example of the most successful coin in history; an antique fine gold ducat or Zecchino, minted under the 82nd Doge of Venice, Lorenzo Priuli. Struck 1556 - 1559 in Venice, Italy.

The gold ducats of Venice were first struck in 1284. Their very high gold content (99.40%) made the coins extremely desirable and they are considered to be the earliest examples of a globally accepted currency. Ducats continued to be struck for over 500 years - longer than any other coin issue in history. $1,250.00
An ancient Indian gold Maiores Domus dinar from the Kushan Empire, struck under Emperor Vasudeva II circa 270 - 310 A.D.

The obverse with Vasudeva II, nimbate, standing left, sacrificing over altar and holding filleted scepter; in left field, filleted trident. The reverse with the goddess Ardoxsho, nimbate, seated facing on throne, holding diadem and cornucopia. $850.00
An ancient Greek hekte from Cyzicus, Mysia, struck circa 500 - 450 B.C. The obverse with naked youth kneeling right, hair bound by taenia with frontal projection, holding knife and tunny fish (emblem of Cyzicus). The reverse with quadripartite incuse square punch. Kyzikos was a wealthy ancient town located between the Aegean and the Black Sea, its advantageous position made it a major center for commerce and trade. $2,250.00
Ancient Celtic gold stater struck by the Chief of the Corieltauvi tribe, Volisios Dumnocoveros. Dating to the Late Iron Age circa 20 - 35 A.D.

The obverse with a vertical wreath made up of square leaves running in opposite directions from the centre of the coin. Across this in two lines is the legend: VOLISIOS The reverse with disjointed Celtic horse, galloping left. $3,250.00
An ancient Byzantine gold solidus of Emperor Basiliscus, (Flavius Basiliscus Augustus.) Struck January 475 - August 476 A.D. at the Constantinople mint. The obverse with a superb portrait of Basiliscus carrying a spear which rests over his shoulder and holding an oval shield, decorated with a horseman spearing a fallen enemy. The legend reading:

D[ominvs] N[oster] BASILICVS P[ater] P[atriae] AVG[vstvs]
"Our Lord Basiliscus, Father of the People, Augustus"

The reverse with the goddess, Victory standing left holding a long, jewelled cross and wearing loose drapery. $7,000.00
Rare Gold Coins

A 1610 Saxon 20 ducat Prince-Elector Christian II gold coin sold for $ 324,000. The very rare and well preserved gold coin has broken the record for the Most Expensive Czech Republic coin.

A Yuan Shi-kai proof gold 1914 Giorgi dollar. It displays Chinese leader Yuan Shi-kai (1859-1916), a pivotal figure in the nation's history who led the transition from monarchy to republic. Estimated at $300,000-500,000.

The first purely Islamic coin ever created. The Umayyad 77h dinar was created in AD 696 under 'Abd al-Malik, who abandoned all iconography from coins and focused solely on religious text. $ 308,000

A Gold Ku'ping pattern tael. Coin was struck in 1906 under the Guangxu emperor and is one of only a handful of Chinese imperial coins produced at the official Mint. $ 85,000

Edward III gold coin, minted in 1343, is one of 3 known -$ 6.8m

A gold aurei medallion of ancient Rome. One of two known. It depicts Roman emperor Maxentius and sold for $1,407,550 U.S.

1795 13-leaves $10 gold eagle coin, graded NGC AU. $123,000-$246,000.

Only 225 of the Tsar Nicholas II coins were ever made. $ 160,000

James I gold coin.

Depicting the first emperor of the Roman Empire, Augustus Caesar, sold for nearly 785,000 U.S.

The 1887 Queen Victoria Crown $250,000.

1864 Quarter Eagle. $ 80,000

The 1933 Double Eagle. Nearly half a million of the 20-dollar gold coins were minted in 1933 in the midst of the Great Depression but only 13 are known to exist today.

The rest were melted down before they left the United States Mint, sacrificed as part of a strategy to remove the United States from the gold standard and stabilize the American economy. $ 7.6m
The Pogue Coin Collection

An 1804 silver dollar is worth $8 to $10m.
The world's greatest private collection of American coins was sold in a record-breaking series of seven auctions at Sotherby's and Stack's Bowers Galleries. Gathered over more than 30 years by Texas property developer A. Mack Pogue and his son, D. Brent Pogue, the collection contains coins from the early years of the American republic, from 1792 to the 1830s.

These are the most sought-after U.S. coins in existence, as the crude production techniques of the period meant that the coins were fragile, making surviving high-quality examples extremely rare.

A 1796 quarter dollar

1793 chain cent–the nation’s earliest penny

The 1795 Flowing Hair, Three Leaves silver dollar

1797 half dollar coin is worth up to $1.75m

1822 five dollar gold coin $8m
An 1808 quarter eagle led Stack's Bowers and Sotheby's sale of the Brent D Pogue collection in New York on May 20, 2015. The lot sold for $2.3m, setting a new world record for a US quarter eagle at auction.