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 Replies: 14 / Views: 5,523 |
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Pillar of the Community
Canada
1931 Posts |
I have a 1968s Lincoln Cent. I noticed what I thought was doubling and took it from it's 2x2 to take some pics. I noticed it is quite a lot thicker than a cent should be. Is this normal for the proofs of that time? It weighs 3.2 grams according to my scale.  I just found a site that lists known coins of the us mint struck on planchets for another country. it listed this: Quote:
1968-S Cent Struck on a Philippine 5 Centavos Planchet (Brass 60%, Cu Zinc 40%) http://minterrornews.com/news-5-13-...he_mint.htmlEdited by malissadawn
09/23/2009 8:23 pm
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Valued Member
United States
321 Posts |
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Pillar of the Community
United States
2520 Posts |
You might start by weighing the coin in question!
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Pillar of the Community
 Canada
1931 Posts |
hi ratman. I did weigh the coin. it weighs 3.2 grams
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Bedrock of the Community
United States
12437 Posts |
Is it actually a 1968-S proof or is it a business strike 1968-S? That year was the return of business strike cents at San Francisco. A proof coin will have thicker squared off rims since it is struck with a higher pressure. The problem here is that a 1958-1966 5 centavo brass planchet is quite a bit heavier at 4.8 grams.
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Pillar of the Community
Canada
1931 Posts |
i Believe it is a proof. I had no idea what the centavo looked like. I was just surprised by the color and thickness of the coin. So if it is a proof it is supposed to look this way then?
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Bedrock of the Community
United States
17884 Posts |
It is counter-intuitive but striking a coin harder between the dies will actually make the coin thicker at the edge. If you look at your edge view pictures the coin on the right shows a typically struck business strike coin. The planchet has expanded to the point where the edge has made contact with the collar resulting in a flat surface, but not how there is a beveled area on either side from that flat edge up to the rim.
But on a proof coin such as the coin on the left the flat area on the edge has now expanded out completely, completely filling in the rims and resulting in a sharp squared corner where the edge meets the rim. This also results in a thicker edge that that seen on the business strikes.
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Valued Member
United States
129 Posts |
A typical 95% copper proof cent weighs 3.11 grams so the weight is not far off? It does look like the color is off...more yellow than I would expect from a proof cent that is this old. Normally they are more red than yellow. Are the surfaces also this color or just the edges?
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Valued Member
United States
65 Posts |
thats a thick coin,looks like brass,probably pretty rare
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Pillar of the Community
Canada
1931 Posts |
HI all I will take some more pics of the rest of the coin as well.
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Pillar of the Community
Canada
1931 Posts |
i took a couple pics but its hard to show color difference at night. The lamp just glares of the surface of both cents. The coin in question is on the left.   Edited by malissadawn
09/26/2009 11:46 pm
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Pillar of the Community
Canada
1931 Posts |
i will try to repost tomorrow if the sun comes out. since obviously my colors are messed up. lol my background color is a white piece of paper so not sure why it came out pink in the bottom image.
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Valued Member
United States
369 Posts |
The reverse of the 68 looks like a proof to me.
Also, my paper backgrounds often come out pink too. I think it's probably just dim lighting.
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Bedrock of the Community
United States
17884 Posts |
It is a normal proof coin.
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Valued Member
United States
106 Posts |
It sure looks like a circulating proof to me. Check out the crispness of the back detail and mirror polish.
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Replies: 14 / Views: 5,523 |
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Posted 09/23/2009 8:52 pm
