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 Replies: 10 / Views: 2,844 |
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Pillar of the Community
Australia
852 Posts |
Hi, I recently purchased a planchet that the seller assumed was an Australian sixpence planchet (said he found it in a batch of Aussie pre decimals). It is the right size and weight for a sixpence and has been rimmed. It doesn't have edge milling, does that get added when the coin is struck? Is there any differences between our sixpence planchets and other countries such as British? (I have noticed on struck coins that PL sixpences have closer milling and the shape of the edge rim is different so perhaps foreign planchets have a different profile for the edging). It makes me think how many planchets (and especially unrimmed blanks) are misdescribed.  Any advice welcome Spelling fixed - Sap  |
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Pillar of the Community
Australia
4411 Posts |
Im pretty sure the edge milling is added during the striking process. I think the british ones are meant to be slightly heavier but unless you have very accurate scales it will be hard to tell.
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Moderator
 Australia
16829 Posts |
It's spelled "planchet", not "plancett". I'll fix the spelling for you, because, right now, this thread is the #1 hit when you type "define: plancett" into Google.   Now, to you questions... Quote:
has been rimmed. It doesn't have edge milling, does that get added when the coin is struck? Yes, the milling on the edge of a sixpence was put there by the collar die when the coin is struck. And the fact that your item lacks milling but does have a rimmed edge lends credence to it actually being a coin planchet, rather than either a non-numismatic metal disc or a normal coin that had simply been ground flat. Quote:
Is there any differences between our sixpence planchets and other countries such as British? The key difference is in composition, and when those compositions were used. For the sixpenced-sized planchet, we have:
Metal content | Dates used in Britain | Dates used in Australia
Sterling | up to 1920 | up to 1945
50% silver | 1921 to 1946 | 1946 to 1964
cupronickel | 1947 to 1967 | 1966 to date (for 5 cent coin)
So if you test the metal content and discover it's 50% silver, it could be an Australian sixpence from 1946-1964, or a British sixpence from 1920-1946. Don't say "infinitely" when you mean "very"; otherwise, you'll have no word left when you want to talk about something really infinite. - C. S. Lewis
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Pillar of the Community
Australia
1295 Posts |
Quote:
So if you test the metal content and discover it's 50% silver, it could be an Australian sixpence from 1946-1964, or a British sixpence from 1920-1946 Or a New Zealand 6d from 1933 to 1946. Did any other Commonwealth countries use 50% fine silver in their coinage? Edited by markn
10/08/2012 01:02 am
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Formerly nancyc
Australia
5385 Posts |
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Did any other Commonwealth countries use 50% fine silver in their coinage? Sth Africa & Fiji did. May be others, I'm not sure. life is a mystery to be lived not a problem to be solved
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Pillar of the Community
Australia
2180 Posts |
Some of the 1920 silver coins of British West Africa were also minted in .500 silver too.
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Pillar of the Community
Australia
2180 Posts |
Actually, it seems that only the sixpences and florins of British West Africa got the .500 silver treatment.
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Formerly nancyc
Australia
5385 Posts |
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Actually, it seems that only the sixpences and florins of British West Africa got the .500 silver treatment. I think some of the BWA 1920 3d were .500 as well. life is a mystery to be lived not a problem to be solved
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Pillar of the Community
Australia
2180 Posts |
Really? My reference (British Commonwealth Coins 1971) says that no silver threepence were made in 1920.
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Pillar of the Community
Australia
877 Posts |
My British Commonwealth Coins, 1968 gives BWA 1920 3d as .925 silver 3,046.000, 0.5 silver 3,616,029 and brass (mintage not stated).
Krause gives 1919 as last year of 0.925 and, for 1920, 0.5 silver 3,616,000 or tin/brass 19,000,000.
I am inclined to think Krause is correct.
Jeff
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Pillar of the Community
Australia
2180 Posts |
Interesting. My British Commonwealth Coins gives 3,616,029 as brass 1920H and 19,000,000 as brass 1920KN. Is the mintage of 3,046,000 given for anything in Krause? Is a mint and a value given for the 3,046,000 threepences in British Commonwealth Coins? My Modern British Commonwealth Coins (Harris 1970) gives 3,616,029 as silver (no purity given) 1920H and 19,000,000 as brass 1920KN. Quote:
I think some of the BWA 1920 3d were .500 as well. Is it really some, or all? |
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Replies: 10 / Views: 2,844 |
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Posted 10/07/2012 01:19 am
