1971-D Kennedy Half Dollar. Cause Of Rippled Lam?

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Author	Replies: 9 / Views: 1,533
Chase007 Pillar of the Community United States 7510 Posts	Posted 03/29/2018 12:44 pm Why is the Lam on the lower portion of the obverse rippled? Rest of the coin on both side is normal. Thank you. Report this Post to the Staff

Mark1959 Pillar of the Community 7234 Posts	Posted 03/29/2018 12:56 pm Just taking a shot in the dark but I'd say some kind of heat source damage like a blowtorch. Report this Post to the Staff
Chase007 Pillar of the Community United States 7510 Posts	Posted 03/29/2018 1:07 pm Mark, that crossed my mind as well but the reason I pursued it is that there are no discoloration on the coin. Report this Post to the Staff
Mark1959 Pillar of the Community 7234 Posts	Posted 03/29/2018 1:16 pm I did an experiment on a nickle awhile ago to show somebodey on here what solder and brazing rod looked like on a nickel and it got pretty hot with no discoloration so who knows Report this Post to the Staff
moxking Rest in Peace United States 17900 Posts	Posted 03/29/2018 2:01 pm Heat pimples sounds most logical. Report this Post to the Staff
John1 Moderator United States 56855 Posts	Posted 03/29/2018 2:10 pm Heat?,VLDS?,struck through thin layer of oil/grease? John1 Report this Post to the Staff
Tunnioc Pillar of the Community United States 3178 Posts	Posted 03/29/2018 2:24 pm I think it is called Orange Peel. http://www.error-ref.com/orange-peel-texture/ Report this Post to the Staff
Chase007 Pillar of the Community United States 7510 Posts	Posted 03/29/2018 2:31 pm Tunnioc, Quote: Die Deterioration: Orange Peel Texture Definition: As a die pounds away at thousands of planchets, the surface metal experiences microscopic plastic flow. Over time, the surface becomes rough. Radial flow lines, concentric flow lines, and an "orange peel" texture are names applied to various patterns of roughness. Thank you, your thread is the most logical. In the past I have seen this on brand new Mint Wrapped roll of Utah Quarters as well. Report this Post to the Staff
Benja Valued Member United States 186 Posts	Posted 03/29/2018 3:17 pm I often see Die Deterioration on nickels that looks like this. Weird that it's only at the bottom of the coin. Report this Post to the Staff
CoinMasters Pillar of the Community United States 5964 Posts	Posted 03/29/2018 5:02 pm It looks to me like the die was worn, and the die flow is heading outward toward the rim. Report this Post to the Staff
	Replies: 9 / Views: 1,533

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