1958 New Zealand Penny Cuni Or Silver Planchet

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Author	Replies: 8 / Views: 4,480
colosfj Valued Member United States 90 Posts	Posted 03/03/2011 03:01 am I am hoping that someone has info on this, I have searched the Internet for weeks and the only thing close was a 1958 1/2 penny that was mentioned here in Feb of 2009. I have had this coin in a bag of stuff that I acquired in the SF Bay Area over 15 year ago. It is the only one that I have found and it is not plated. There are pits in the reverse and many bag marks all over and no Copper showing anywhere. Any Help would be appreciated. Report this Post to the Staff

colosfj Valued Member United States 90 Posts	Posted 03/04/2011 3:20 pm Well I see that some of you have been reading this but no comments. I will ask another question. Who should I send it to for Verification and Grading? Will NGC be my best choice? Report this Post to the Staff
biokemist6 Bedrock of the Community United States 12437 Posts	Posted 03/04/2011 3:57 pm Have you weighed it yet? I would also recommend preforming a preliminary test for silver- the tissue test. Scroll about 3/4 of the way down the first page, silver reflects white while zinc or CuNi would be dark. Edited by biokemist6 03/04/2011 5:06 pm Report this Post to the Staff
colosfj Valued Member United States 90 Posts	Posted 03/04/2011 4:16 pm I am currently looking for a good scale, all I have now is a postage scale and it weighed 8 Grams. On the tissue test it looks to be CuNi and not Silver. I am trying to figure out what denomination CuNi Palnchet would fit the Penny Dies? Half Crown Maybe? What are the odds of this being the only one like this, they must have made this kind of error before. Report this Post to the Staff
Sap Moderator Australia 16831 Posts	Posted 03/04/2011 7:05 pm I would assume it's an ordinary penny that's been silvered, either by paint or by electroplating, just like the one in pls's old thread you found. An ordinary bronze penny would be 31mm across and weigh 9.4 grams. A halfcrown should weigh 14.1 grams and be 33mm diameter, while a florin is 11.3 grams and 28.5mm. Neither of those coins are possibilities for a "wrong planchet" error. Don't say "infinitely" when you mean "very"; otherwise, you'll have no word left when you want to talk about something really infinite. - C. S. Lewis Report this Post to the Staff
colosfj Valued Member United States 90 Posts	Posted 03/05/2011 12:07 am I am just not believing that this could be plated or silvered. There are pits from corrosion on the reverse that had verdigris in them which I have removed with Verdi-Care and checked out with a 16X Loupe. There is no copper in these pits at all. I am going to try and scan just one of the pits so you can see. The weight is not what I would expect from a CuNi Planchet but what could it be? I wish that I had better equipment (Microscope) for this. There are carbon spots but the metal of the surface that has been corroded is silver in color. Where should I send this? I do not want to damage the coin to determine what it is composed of. Report this Post to the Staff
colosfj Valued Member United States 90 Posts	Posted 03/17/2011 2:28 pm Obtained a decent scale the coin weighs in at 9.38 grams Report this Post to the Staff
Sap Moderator Australia 16831 Posts	Posted 03/17/2011 11:12 pm Sounds like a normal penny that's been plated, then. Don't say "infinitely" when you mean "very"; otherwise, you'll have no word left when you want to talk about something really infinite. - C. S. Lewis Report this Post to the Staff
Nevol Formerly nancyc Australia 5385 Posts	Posted 03/18/2011 3:56 pm A bit of a coincidence that both coins in question are 1958. Methinks someone back then had nothing better to do with their time. life is a mystery to be lived not a problem to be solved Report this Post to the Staff
	Replies: 8 / Views: 4,480

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