What Could Have Caused These Holes On 1990 Lincoln Cent

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Author	Replies: 6 / Views: 1,498
mshay844 New Member United States 32 Posts	Posted 04/14/2017 5:25 pm Report this Post to the Staff

biokemist6 Bedrock of the Community United States 12437 Posts	Posted 04/14/2017 5:27 pm Zinc rot, a form of corrosion found on 1982-present copper-plated zinc Lincoln Cents. Report this Post to the Staff
BStrauss3 Pillar of the Community United States 4594 Posts	Posted 04/14/2017 5:30 pm Zinc rot then more environmental exposure. Since mid 1982, cents are made of a copper plated zinc core. Zinc, when exposed to moisture rots. -----Burton 50+ year / Life / Emeritus ANA member (joined 12/1/1973) Life member: Numismatics International, CONECA Member: TNA, FtWCC, NETCC, EveryCountry (online) coin club Owned by three cats and a wife of 40+ years (joined 1983) Author: 3rd Edition of the Sample Slabs book, https://www.sampleslabs.info/ Report this Post to the Staff
Crazyb0 Rest in Peace 10197 Posts	Posted 04/14/2017 5:33 pm As Biokemist said, zinc rot. The Thin plated zinc core planchet when damaged allows air and other liquid corrosives into the core, disintegration of the zinc begins, early stages of this rot may show up in bubble like appearances and even lines form. Once these bubbles are broken, advanced stage rot like yours happens' Report this Post to the Staff
coin197 Pillar of the Community United States 1963 Posts	Posted 04/14/2017 7:45 pm Zinc rot, and corrosion. Report this Post to the Staff
Chase007 Pillar of the Community United States 7516 Posts	Posted 04/14/2017 9:42 pm I agree with all above! Report this Post to the Staff
coop Bedrock of the Community United States 62064 Posts	Posted 04/16/2017 1:12 pm Probably spent some time in a parking lot. The coin was split through by sand, then started to rot when oxygen got to the zinc. Report this Post to the Staff
	Replies: 6 / Views: 1,498

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