What Causes "ripples" On A Jefferson Nickel?

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Author	Replies: 5 / Views: 1,217
JohnDeVito Valued Member United States 196 Posts	Posted 12/16/2015 09:33 am I was going through some Nickels last night and came across a couple where the reverse is not smooth (especially beneath Monticello), both from Philadelphia. I was wondering what causes this and it is a curiosity worth keeping? I was thinking it probably isn't a big deal, but since the rest (and I went through 100 or so) were smooth I thought I would ask. 1985P 1988P Report this Post to the Staff

Kefiroth Pillar of the Community United States 1431 Posts	Posted 12/16/2015 09:47 am The "ripples" are an artifact of stressed/deteriorating dies. Very common, especially on early-80s Philadelphia strikes. Left alone for much longer, these dies would eventually break and form Cuds. Report this Post to the Staff
JohnDeVito Valued Member United States 196 Posts	Posted 12/16/2015 09:56 am Thanks for the info, and thanks for the patience with the newbie Report this Post to the Staff
JC Stevens Pillar of the Community United States 538 Posts	Posted 12/17/2015 12:41 pm Die Deterioration Here is a link with some examples for Die Deterioration. http://www.error-ref.com/?s=die+deterioration Cuds-on-Coins http://cuds-on-coins.com/ Report this Post to the Staff
JohnDeVito Valued Member United States 196 Posts	Posted 12/17/2015 5:46 pm Thanks. I bookmarked the page for future reference. Report this Post to the Staff
koinpro Pillar of the Community United States 1781 Posts	Posted 12/17/2015 11:38 pm This is the result of the extended use of dies or what we call Late To Very Late Die State. Or it could be due to premature die fatigue due to improper hardening of the dies, a very common cause in the 1980s according to the Mint. Here is one in what would be called Extremely Late Die State on a 1980-D. Report this Post to the Staff
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What Causes "Ripples" On A Jefferson Nickel?