I bought an original roll of 1980 cents a few years back. Most of them exhibit the same error. Is this a cud? Does it have much of a value?
I may be wrong in my definition, but I believe a cud is where a portion of the die broke and completely fell off, which is why you see them only on the rims. A chip is just that, a chipped portion of the die. Guy~
Die break These are large raised irregular blobs found usually at the design stress points. They are most often found in the fields between the design and the rim. After repeated strikings under tons of pressure, the dies begin to crack. When these cracks meet each other (as in a circle), or when they extend to the rim, the metal contained within the borders of the crack begins to break away from the die itself. The broken piece may not at first be loose enough to fall away. In such a case, the coin shows a depression where the die chip or, if it is large enough, the die break has occurred. Die chip These are small raised irregular blobs of metal found usually at the design stress points. They are most often found in the recessed areas of certain letters or numbers (e.g.; B & R of LIBERTY and the 9 & 5 of the date). This is because the recessed areas of the letters and numbers on the coin are raised areas on the die, which look like little islands. It does not take much stress before these raised pieces of the die start to chip and break off, leaving a raised area on the coin where a recessed area is expected. 1918-S 1c w/die chips in Mint mark. (Coin courtesy of James S. Bailey/Photo by Ken Potter) Major die break "CUD" This is a further sub-category of the split die. When a broken piece of a split die completely separates from the die and falls away, the result is commonly called a “cud.” Because of a lack of pressure, the planchet metal flows into the broken area of the die, creating a weakened image on the opposite side of the coin. Major die breaks have been actively collected for many years. They are most commonly found on Lincoln cents, but are known on many denominations. Major die breaks on halves and dollars are considered rare. Logically, the larger the die break, the larger the premium. 1998 Two Different Mardi Gras Medallion Dies with Major Die Break "Cuds" (These are actual dies). (Dies courtesy of Ken Potter), 1971-D 1c w/Major Die Break covering half of obverse (Photo/coin courtesy of Ken Potter). Great website: http://conecaonline.org/index.html Error definitions: http://conecaonline.org/content/glossary.html
And...no signs of it being a doubled die. (Unless that chip is a diagnostic for the 1980 DDO, (I haven't heard of it being one though) Thanks, Bill