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Ancient Greek Roman Byzantine - Double-Strike Countermark Brockage Error Coins for Sale Online

Buy certified ancient coins with coin errors, such as DOUBLE-STRIKE, COUNTERMARK and BROCKAGE. Find out more about types of ancient coin errors that are available for sale. There is also a large selection of affordable ancient silver Roman coins available to buy. Get incredible value with a LIFETIME GUARANTEE of AUTHENTICITY. Also every item purchased here comes with a beautiuful custom-made certificate of authenticity, complete with professional description, research, professional photograph and historical synopsis, a $50-$100 value, absolutely free, signed by world-renowned ancient coin expert, Ilya Zlobin. A fun way to explore history, making a great gift, great for coin collecting and investment!

Brockage ancient coins for saleAncient Roman Brockage Coins for Sale 
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Brockage error Coin of Constantine II 'Junior' - Roman Emperor: 337-340 A.D. -
In coin collecting, brockage refers to a type of error coin in which one side of the coin has both the normal image and a mirror image of the opposite side impressed upon it.


Buy Ancient Greek and Roman Countermark Coins Online

Counter-mark Ancient Greek coin of Antigonos Gonatas - Macedonian King: 277-239 B.C. with Head of Athena right, in crested Corinthian helmet. Bee Countermark.

Countermarks on ancient coins were done for worn-out coins to re-issue them back into circulation, as almost a "stamp" of approval that it is legal tender.


Buy ancient Greek Roman Byzantine Double-Strike Error Coins Online

Double-strike error Greek city of Syracuse in Sicily
Bronze 25mm (5.91 grams) Struck under the Reign of Hiketas, 288-279 B.C.

This is an excellent example of this coin being struck once, and then rotated slightly and struck again.


In coin collecting, brockage refers to a type of error coin in which one side of the coin has both the normal image and a mirror image of the opposite side impressed upon it.

Brockage errors are caused when an already minted coin sticks to the coin die and impresses onto another coin. Brockages are relatively rare among modern coins of industrialised countries where mints exercise a strict production control and somewhat less rare among the modern coins of some developing countries which operate their own mint (e.g. Nepal); in good condition, coins with clear brockage are a collector's item and can sell for substantial amounts of money.

One can distinguish between obverse and reverse brockages. Obverse brockages occur when the previously struck coin was not ejected and gets stuck to the lower die, and reverse brockages when the previously struck coin remains stuck to the upper die.

In the production of hammered coinage, brockages were very common, although largely restricted to obverse brockages, as the mint worker would likely notice if the coin was stuck in the reverse anvil die. If the mint worker did notice the brockage, they had the option of restriking it. There is no consensus among numismatists concerning the existence of restruck brockages, as they would appear similar to coins with heavily clashed dies.

The use of screw presses drastically reduced the amount of brockages which escaped the mint from the mid 16th-century onwards, but as high speed machinery became more common in the 19th century, more brockages appear. It is known that some unscrupulous mint workers have created brockages in the past simply in order to sell to coin collectors.


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