Rusted Dies
DIES which have been damaged (pitted) through corrosion. The "rusted" areas of a die create raised bumps on the coin during the STRIKING process thus giving the coin a flat or dull appearance.
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RUSTED DIES
Dies which have become pitted through corrosion. The pits are transformed into tiny dots of metal on the coin, some of which are visible and others simply giving the coin a fussy look.
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Rusted dies can result while in storage, leaving some pitted areas on the die. Coins struck from rusted dies can have raised spots, caused by metal flowing into the rust-eaten pits during the striking process.
Struck from rusted dies. Obverse with several small, raised "dots" or lumps on Liberty's jawline and in the field, mainly the former. On the reverse, a sizeable lump appears in the field below the ME of AMERICA.
A few examples are known of coins that were struck with extremely rusted dies -- the 1876-CC dime, for one. die state A readily identified point in the life of a coinage die. Often dies clash and are polished, crack, break, etc.
Many pieces were struck from heavily rusted dies. In addition to this die rust, the overall quality of strike was poor. These coins looked worn as soon as they left the die, and even a short stint in circulation left them with a wretched appearance.
Die rust - Pitting or roughness appearing on a coin as a result of that coin having been struck by a rusted die.
Die scratch - Raised line on the surface of a coin, caused by a scratch in the coinage die.
Breen suggests the later examples were made with a rusted die that deformed the letter A in the word America. Possibly examples of the Getz prototype that exhibit signs of with this die state date to the mid 1790's.
Pitting or roughness appearing on a coin as a result of that coin having been struck by a rusted die.
Die state ...
Often such rust was polished away, so that only the deeply recessed parts of the die still exhibited it. A few examples are known of coins that were struck with extremely rusted dies - the 1876-CC dime, for one.
These restrikes can easily be distinguished from the originals as they exhibit evidence of tooling to correct flaws in the badly rusted dies. Other restrikes and uniface examples of this date are known in white metal.
The 1827 restrikes are well known because of the rarity of issues for the year, and were most likely surreptitiously made in the late 1850s, some with rusted dies and some overstruck on older quarters (a piece struck on an 1806 quarter is known).
 See also: Coin, Obverse, Struck, Mint, Reverse
  
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