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 Replies: 13 / Views: 2,532 |
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Pillar of the Community
 Canada
2360 Posts |
Got a new phone and tried out my camera and macro lens. Turned out pretty cool, you can see the wire cut across the A in the legend and in detail it looks like the trapped wire was a twisted pair. The coin flip said planchet flaw. I like silver error coins.       |
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Bedrock of the Community
United States
94367 Posts |
To me that looks like a bag mark from a similar coin with a reeded edge.
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Pillar of the Community
United States
7042 Posts |
Wow...those photos were taken by a phone...  |
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Pillar of the Community
 Canada
2360 Posts |
Arc radius seems a tad too wide for a bag mark. Thinking out loud here @Coinfrog.  |
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Pillar of the Community
Canada
3733 Posts |
struck through a rim burr.
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Valued Member
United States
284 Posts |
I find the last photo a bit intriguing. Funny things happen in human visual circuits when three dimensions have to be jammed into just two dimensions. Where the phenomenon first encounters the foot of the "A", it appears the die afforded extra space in its cavity to accommodate the object. It seems that would require an extremely soft die. Or maybe my vision is translating a cavity in the "A" (the predictably softer metal) to present a lump protruding from the "A"?
Kevin
Edited by Kcm
05/01/2021 09:25 am
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Pillar of the Community
Canada
1781 Posts |
Quote:
struck through a rim burr. My 1st thought was some swarf got in on the strike, I don't think its a wire. Rim burr fits. Good call. Nice pics Don. . "We are poor little lambs...who have lost our way...Baa...Baa...Baa"
In memory of those members who left us too soon...
In memory of Tootallious March 31, 1964 - April 15, 2020
In memory of crazyb0 July 27 2020. RIP.
In memory of T-BOP Oct. 12, 1949 - Jan. 19, 2024
Edited by loonielewy
05/01/2021 09:42 am
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Pillar of the Community
Canada
2360 Posts |
Was hoping is was a strike through. I see the foot of the A Kcm as the area of interest as well, the rim burr or swarf* is almost wrapped around the foot as it was trapped in the strike. Thanks for the compliments on the photos, great little Motorola. I hold the coin flip up to a light source with the macro lens. *Great scrabble word Loonie.  |
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Pillar of the Community
Canada
5589 Posts |
It's strange to see "swarf". I always thought that it was a Brit made-up word. On the hydrofoil gunboat that we (the CG) got from the Navy, It had a Rolls-Royce turbine for main propulsion driving the prop on the stern. We had to pull it one day and the Rolls tech-rep was there to assist us. He looked it over after the cowlings were removed and he said. " There's the problem; swarf on the turbine blades" As a naval engineer I had never heard the word, so he gave me the definition. Swarf is something that's there, but not supposed to be there!!". I used the term for my next 20 years around engine rooms and shipyards. You are right ... swarf is a great word!
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Pillar of the Community
Canada
1781 Posts |
Swarf by my definition is the cuttings made by a tool in a machine shop. Drill swarf, lathe swarf and milling machine swarf. It comes in all shapes and sizes.
"We are poor little lambs...who have lost our way...Baa...Baa...Baa"
In memory of those members who left us too soon...
In memory of Tootallious March 31, 1964 - April 15, 2020
In memory of crazyb0 July 27 2020. RIP.
In memory of T-BOP Oct. 12, 1949 - Jan. 19, 2024
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Pillar of the Community
Canada
6244 Posts |
PMD and nothing more on this coin.
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Moderator
 Canada
10458 Posts |
silviosi - I completely disagree, this is a strike-through error, likely a wire from the collar die shearing the reeding edge. There is no evidence of displaced metal. You see this error type far more frequently in US coins, and in fact, the only Canadian coins I have ever seen this strike-through type on, are silver dollars. "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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Pillar of the Community
Canada
1781 Posts |
You got it SPP, that is exactly what a piece of sheared swarf would look like struck into a coin. The wire mirage is from the high spots of the sheared reeds being a thicker section of the foreign material. Not a twist in a real wire. Goes like this...Top of reed gets sliced off more than the valley between the reeds, gives you a thick and thin burr, just as shown.
"We are poor little lambs...who have lost our way...Baa...Baa...Baa"
In memory of those members who left us too soon...
In memory of Tootallious March 31, 1964 - April 15, 2020
In memory of crazyb0 July 27 2020. RIP.
In memory of T-BOP Oct. 12, 1949 - Jan. 19, 2024
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Pillar of the Community
United States
7042 Posts |
Can't wait for the next strike through error...so I can use the word swarf, if it would apply. Covid was the word for 2020...lets make Swarf the word for 2021....  |
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Replies: 13 / Views: 2,532 |
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Posted 04/30/2021 10:46 pm
