Stan McDonald - author 's Blog

13 Nov 2021

Damaged Dies and Hubs

Coins | Stan McDonald - author

Damaged Die
Some die errors may be confused as die cracks, but there is a difference. A raised, thin, jagged line is attributed to a crack in a die, while a thick raised line occurs with a damaged die.When debris enters the stamping process, the debris may make an impression on the die head. Subsequent coins minted will show a thick line of material raised on the surface of the coin. If a hub is damaged, a similar line of material will appear on the surface of coins minted with dies prepared from a damaged hub.The first coin will have an indent on the coin's surface as the dies are pressed together to crush the debris into the coin's surface. Many of these coins are passed up by collectors as manmade damage, but there is a difference. Most manmade damage on the surface of a coin is created by scratching or gouging the coin and is easily recognized.
By Stan McDonald - Author and Numismatist



Level 6

Nicely done. Got to errors. Thanks for the photos as well.


Level 6

Thanks for your "error coin" blogs! They are really interesting! ; )


Level 5

Very interesting. I would think most business strikes have marks and lines. Proof coins are minted better. Thanks for sharing. This topic is very nice.


Level 7

Most of us do not have high magnification. Therefore we cant find these. And do you know the value of these. Are they worth looking for everyday? We use loops. Just like the graders. And as I stated before the mint never makes billions of perfect coins. . These are business strikes.. Billions. Are made. I have the cherrypickers guide most of us do. . We use that as guide.. Thank you for sharing your knowledge.

Hi, Most coin guides do not reveal these types of errors, nor the value of these errors. The error described is not of significant value unless in mint state condition. My blog posts are from my book sold on Amazon

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