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 Replies: 22 / Views: 7,271 |
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Moderator
 Canada
10468 Posts |
Around 10% zinc, with little or no tin.
"Discovery follows discovery, each both raising and answering questions, each ending a long search, and each providing the new instruments for a new search." -- J. Robert OppenheimerContent of this post is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported License. See: http://creativecommons.org/licenses...0/deed.en_USMy eBay store
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New Member
 United States
9 Posts |
ok  anyway I did not get a clear answer on coin diameter?I do not think that the Victorian large cent pros. used the caliber.If brass known, maybe 20  So,how many in the world larger then 25.4mm? I think that the wealthy collectors in control  as you want, but my coin really worth more than two dollars  |
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Moderator
Canada
10468 Posts |
If you really want to know, it will only cost you postage (both ways) for me to test it for you in my lab with the XRF. Read my profile, and most members here, including the moderators, can vouch for me.
"Discovery follows discovery, each both raising and answering questions, each ending a long search, and each providing the new instruments for a new search." -- J. Robert OppenheimerContent of this post is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported License. See: http://creativecommons.org/licenses...0/deed.en_USMy eBay store
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New Member
United States
9 Posts |
SPP-Ottawa thanks  but I got a response from the NGC 93+%cu 4% Sn 1% zn weight light due to wear And, again, no response on the diameter |
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Pillar of the Community
 United States
1358 Posts |
These coins probably were struck on different coin presses. I am guessing that all of the collars were not all perfectly 25.4 mm. and the planchet expanded into a slightly larger collar upon striking.
http://www.victoriancent.com2011 & 2025 Fred Bowman Literary Award, 2025 Guy Potter Literary Award, 2022 Paul Fiocca Award, & 2020 J. Douglas Ferguson Award. Life Member of RCNA.
Edited by bosox
03/01/2013 01:48 am
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New Member
United States
9 Posts |
SPP-Ottawa you have analyzed the Bank of Canada's National Currency Collection 1859 brass cent. It is less than 90% copper, more than 10% zinc and contains no tin.
Tell me, what was the weight of the coin and diameter?
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Valued Member
197 Posts |
Darutis ... I finally found my caliper and thought that I would give you the diameters of 10 random 1859 bronze cents. I have at least 600 in albums and another 300 or so loose to look at some more. Here is what I found in a completely random stack of 10:
the 10 ranged from a low of 26.67mm (1) to 27.94mm (2) with most in the centered (within .05 mm) at 27.56mm. As Bosox said, the planchets were ordered at 25.4 mm and the collars for the dies had to be a little bigger. When the when the hammer die met the anvil die, then planchet had to expand due to the pressure; hence the larger diameter than the 25.4 start.
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Replies: 22 / Views: 7,271 |
First Page
Posted 02/27/2013 8:20 pm
