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 Replies: 10 / Views: 1,724 |
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Pillar of the Community
Canada
1081 Posts |
I've seen this term 'whizzed' used to describe copper (see below) and silver. Is it a distinct process for cleaning?What does it mean? How is it done? It's obviously not desirable but, specifically, why is that? https://auctions.canadiancoinsandpa.../330/lot/961 |
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Pillar of the Community
 United States
6524 Posts |
Quote:
Whizzing - The artificial treatment of a coin by wire brushing, acid dipping, or otherwise removing metal from the coin's surface to give it the artificial appearance of being in a higher grade. Whizzing is an alteration, not a grade or condition. ~ - The process of attempting to add luster to a coin by polishing the coin with a buffing wheel. |
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Moderator
United States
34397 Posts |
@silver, you might be interested to know that there is a CCF glossary, with definitions of a whole bunch of numismatic terms. It is accessible via a link on the left hand side of your screen.
"If you climb a good tree, you get a push."
-----Ghanaian proverb
"The danger we all now face is distinguishing between what is authentic and what is performed."
-----King Adz
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CCF Master Historian of USA Commemoratives
United States
12257 Posts |
Quote:
whizzing - The artificial treatment of a coin by wire brushing, acid dipping, or otherwise removing metal from the coin's surface... This is intriguing. I've never heard of acid dipping being part of "whizzing." I've always understood whizzing to be an abrasive/mechanical process in contrast to non-abrasive dipping. May I inquire as to the source of this definition? I'd like to explore it more. Thanks! Collecting history one coin or medal at a time! (c) commems. All rights reserved.
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Bedrock of the Community
United States
94367 Posts |
 That's been my understanding my whole collecting life. |
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Bedrock of the Community
United States
20753 Posts |
Mainly just keep away from coins that are stated as whizzed.
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Pillar of the Community
 United States
6514 Posts |
I agree with commems. I always thought it was a mechanical process.
Check out my counterstamped Lincoln Cent collection: http://goccf.com/t/303507 |
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Bedrock of the Community
United States
12477 Posts |
I have never understood acid-dipped to mean "whizzed", either.
In Memory of Crazyb0 12-26-1951 to 7-27-2020
In Memory of Tootallious 3-31-1964 to 4-15-2020
In Memory of T-BOP 10-12-1949 to 1-19-2024
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Moderator
United States
34397 Posts |
Right. For comparison, here is the one we have at CCF: Quote:
whizzing
Term to describe the process of mechanically moving the metal of a lightly circulated coin to simulate luster. Usually accomplished by using a wire brush attachment on a high-speed drill. "If you climb a good tree, you get a push."
-----Ghanaian proverb
"The danger we all now face is distinguishing between what is authentic and what is performed."
-----King Adz
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Bedrock of the Community
United States
19935 Posts |
Old timers always told me they used glass wool and a drill to whiz a coin. On my list of things to try someday.
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Bedrock of the Community
United States
94367 Posts |
As an old-timer, I can attest to have seen this done.
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Replies: 10 / Views: 1,724 |
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Posted 11/09/2021 05:28 am
