1980 Silver Colored Penny / Need Help On This One - Page 2

To participate in the forum you must log in or register.

Author	Replies: 22 / Views: 3,158	Page: of 2

john100 Pillar of the Community Canada 5324 Posts	Posted 12/20/2021 11:45 am But the foreign planchet could have been stuck in a bulk bin and filled with blanks for the 1980 Canadian strikes or many other logical reasons or in this time period a purpose built coin Report this Post to the Staff
johnnysprawl Pillar of the Community Canada 1620 Posts	Posted 12/20/2021 12:08 pm All I'm saying is that planchets from 1981 are ruled out; planchets dont travel back in time as far as I'm aware. It could still be struck on a 1978 or 1979 NZ 5c planchet, but since the OPs coin doesn't look anything like SPP's, I dont think it was struck on a foreign planchet IMHO Report this Post to the Staff
Smallcentguy Pillar of the Community Canada 1984 Posts	Posted 12/20/2021 12:41 pm But they don't travel back they travel forward..... If NZ wanted coins to be ready for 1981, they may have struck them in Canada in 1980 so that they could be sent to NZ in time for a 1981 launch. Report this Post to the Staff
SPP-Ottawa Moderator Canada 10458 Posts	Posted 12/20/2021 5:40 pm Quote: Did the planchet thickness change between 1979 and 1980? For normal 1c coins? Absolutely - from 3.24 grams in 1979 to 2.8 grams in 1980. The die set up to strike those coins would have been adjusted accordingly. So a 2.8 gram Cu-Ni planchet in 1979 would be weakly struck, but a 2.8 gram planchet in 1980 would be fully struck. "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 Oppenheimer Content of this post is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported License. See: http://creativecommons.org/licenses...0/deed.en_US My eBay store Report this Post to the Staff
coinman91 Pillar of the Community Canada 668 Posts	Posted 12/21/2021 10:15 am Very interesting to see the tight tolerances the dies must hold in correspondence with the planchet. Report this Post to the Staff
SPP-Ottawa Moderator Canada 10458 Posts	Posted 12/21/2021 3:54 pm Quote: Very interesting to see the tight tolerances the dies must hold in correspondence with the planchet. Yes... and no. if tolerances were really tight, We'd never see a die clash!! "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 Oppenheimer Content of this post is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported License. See: http://creativecommons.org/licenses...0/deed.en_US My eBay store Report this Post to the Staff
coinman91 Pillar of the Community Canada 668 Posts	Posted 12/21/2021 4:12 pm Quote: Yes... and no. if tolerances were really tight, We'd never see a die clash!! Great point! if the tolerances were that tight the dies in theory would never clash.. I have lots to learn still in terms of how clashes occur in the first place! Report this Post to the Staff
	Replies: 22 / Views: 3,158	Page: of 2

First Page Last 15 Replies

To participate in the forum you must log in or register.

All Forums Category: Canadian Coins and Currency Forums Forum: Canadian Variety and Error Coins

The First Dollar, your premier source for bullion and rare coins. See our bullion list on the site and the coin inventory on ebay.

Silver Gold Bull US is the United States leading bullion dealer. We deliver gold coins, gold bars, silver coins, silver bars and precious metals to your door. Order today!

View Last 100 New Topics

View Last 100 Active Topics

Disclaimer: While a tremendous amount of effort goes into ensuring the accuracy of the information contained in this site, Coin Community assumes no liability for errors. Copyright 2005 - 2026 Coin Community Family- all rights reserved worldwide. Use of any images or content on this website without prior written permission of Coin Community or the original lender is strictly prohibited.
Contact Us | Advertise Here | Privacy Policy / Terms of Use

Coin Community Forum

It took 0.29 seconds to rattle this change.