1975 Lincoln Memorial Cent / LMC - Partial Plating ?

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Author	Replies: 6 / Views: 1,226
ter215 Valued Member United States 230 Posts	Posted 11/22/2016 11:17 pm hello everyone.....found this roll searching, a 1975 LMC, maybe a partial plating error ? ..not sure, any expert help would be great & thanks in advance ..terry.. Report this Post to the Staff

BStrauss3 Pillar of the Community United States 4594 Posts	Posted 11/22/2016 11:28 pm 1975 is before the switch to copper plated zinc (1983). So it should be pure copper. If it's plated, it was done post minting. -----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
ter215 Valued Member United States 230 Posts	Posted 11/22/2016 11:55 pm hi burton...dah...I'm still learning, I'm not sure what this is, weights 3.2 gr.....does not look plated? any ideas? ...either way, it's pretty cool...thanks for your input.. Report this Post to the Staff
ter215 Valued Member United States 230 Posts	Posted 11/23/2016 12:21 am maybe someone can change title for me to 1975 LMC brass planchet ? ....sorry for mix up ....thank you all , see ya tomorrow .. Report this Post to the Staff
John1 Moderator United States 56855 Posts	Posted 11/23/2016 04:23 am The switch from copper to copper plated zinc happened in 1982. Some 1982 cents are copper and some are copper plated zinc. Pre 1982 cents are not pure copper,95%copper 5% zinc/tin. The weight of the OP's coin is within mint tolerance. Zincolns weight 2.5G and non Zincolns 3.1G +/- .14G. The Op's coin looks normal with some toning. John1 Report this Post to the Staff
biokemist6 Bedrock of the Community United States 12437 Posts	Posted 11/23/2016 12:17 pm Quote: 1975 LMC brass planchet You are correct, it would be a brass planchet but it is perfectly normal. The tin content was slowly phased out between post-WWII and 1962 so the composition from 1962-1982 was actually 95% copper and 5% zinc. Due to the high copper content of both alloys, there is little to no visual difference between them. The newer brass-plated Zincoln errors have a plating that is rich in zinc(due to leftover zinc planchets dissolving in the electroplating bath) so they tend to be a more traditional yellow brassy color. Report this Post to the Staff
ter215 Valued Member United States 230 Posts	Posted 11/23/2016 4:08 pm thanks biokem , john & everyone else .....learning everyday on this great site .. Report this Post to the Staff
	Replies: 6 / Views: 1,226

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1975 LMC - Partial Plating ?