What Affects Penny Thicknesses? - Coin Community Forum

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Author	Replies: 5 / Views: 912
jdavis18 Pillar of the Community United States 556 Posts	Posted 08/04/2011 8:59 pm This thread is just a question so I can learn something. I was curious so can anyone tell me what effects the thickness of coins. For instance, I was going through a pile of 2007 LMCs and the thicknesses all seem to vary a decent amount. Do most of these differences come from different pressures when the dies are used to create the coins or from wear or from something else entirely? Thanks for the knowledge in advance. Report this Post to the Staff

Maineman750 Pillar of the Community United States 3592 Posts	Posted 08/04/2011 9:30 pm Try measuring with dial calipers or something very accurate. Looks are decieving but really there shouldn't large variances. Report this Post to the Staff
coop Bedrock of the Community United States 62064 Posts	Posted 08/04/2011 9:49 pm Sometimes during the setup process the rims become thicker and the coin feels thicker, but the center of the planchet isn't, just the rim area. When you see a roll of cents in a clear tube you see some cents that are thicker on one side, but that is very common. What causes it I don't know, but it is just too common to deserve a premium. If the planchet is under weight, it might be a thinner planchet or split planchet. So images would help to see what you have. Report this Post to the Staff
jdavis18 Pillar of the Community United States 556 Posts	Posted 08/04/2011 9:57 pm It was a just a general question. I am still new to this whole thing and I am just trying to learn. Thanks for your patience and help. Report this Post to the Staff
Yokozuna Pillar of the Community United States 4618 Posts	Posted 08/05/2011 05:22 am I have a 5000 coin bag of '74-D cents that only 48 coins will fit in a 50 count plastic tube, and even then I can't put the cap on some tubes. They're all are the proper weight, but seem thicker than they should be. They all have major die polishing because of heavy die clash. I don't have calipers, but they're on my list of tools to buy. ANA ID: 3203813 - CONECA ID: N-5637 Clean a coin that may be worth collecting? Please DON'T! When in doubt, leave it dirty!! Edited by Yokozuna 08/05/2011 05:24 am Report this Post to the Staff
Conder101 Bedrock of the Community United States 17884 Posts	Posted 08/05/2011 1:54 pm Thickness at the edge of the coin is determined by the striking pressure and how well struck it is (This assumes all the blanks are the proper weight and rolled to the correct thickness.) The higher the pressure the thicker the edge will be. This is because with the higher pressure the metal is forced harder against the collar pushing the metal up and down more completely filling the rims. If you compare the edges of a typical business strike coin to that of a proof you will see that the edge of the business strike tend to be "rounded" and often with bevels from the rims to the center of the edge. On the proofs the rims are fully struck up and the edge meets the rim at a nice sharp squared off corner. And the edges of the proofs are thicker, caused by the higher pressure and double striking. Report this Post to the Staff
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