What Is This Luster Pattern On My Kennedy Half?

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Author	Replies: 8 / Views: 1,519
tkbslc Pillar of the Community United States 1158 Posts	Posted 08/10/2014 5:44 pm Was looking closer at the 2012-P Kennedy and I noticed some odd pattern to the luster. It's like it's all in lines radiating from the middle. I don't think it could be cleaning marks based on the pattern and the condition of the coin. Any ideas what causes this and it is at all a desirable "error"? It's on both sides, but strongest on the obverse. Edited by tkbslc 08/10/2014 5:45 pm Report this Post to the Staff

amida17 Pillar of the Community United States 4897 Posts	Posted 08/10/2014 5:50 pm Die flow lines, later die state? Edited by amida17 08/10/2014 5:50 pm Report this Post to the Staff
Kefiroth Pillar of the Community United States 1431 Posts	Posted 08/10/2014 6:10 pm Yup. I believe that's what's called the "orange peel" effect, caused by worn dies. Report this Post to the Staff
mgillette Valued Member United States 374 Posts	Posted 08/10/2014 7:31 pm Yep, you can also see the effects on the outer edges of the lettering. Report this Post to the Staff
Matteproof Pillar of the Community Korea, Republic Of 1881 Posts	Posted 08/10/2014 7:34 pm Die flow lines caused by Late Die State (LDS). Report this Post to the Staff
junjun Pillar of the Community Puerto Rico 778 Posts	Posted 08/10/2014 7:49 pm Die deterioration. Report this Post to the Staff
tkbslc Pillar of the Community United States 1158 Posts	Posted 08/10/2014 10:11 pm Is it considered an error or just along the lines of a crummy strike? Report this Post to the Staff
denco7 Pillar of the Community United States 2543 Posts	Posted 08/10/2014 10:25 pm When a coin is struck, the pressure from the die on the planchet causes the silver/metal to flow outward towsrd the edge to fill the die. This is what causes that cartwheel luster on Morgans and Eagles. as the die get used more and more, the outward travel of the metal wears outward striations into the die. This is what causes those lines. It is not an error, just time to replace or polish the dies. Edited by denco7 08/10/2014 10:27 pm Report this Post to the Staff
tkbslc Pillar of the Community United States 1158 Posts	Posted 08/11/2014 12:36 pm Thanks for the explanation. So I'm assuming this is a less desirable coin trait (Even if a 2012 P isn't exactly a high value coin regardless). Report this Post to the Staff
	Replies: 8 / Views: 1,519

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