kommodore
Joined: 5-Nov-2009
Posts: 2966
Posted: 11-Sep-2021, 12:18
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Posted: 11-Sep-2021, 12:18
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Hey guys
How can you distinguish the pattern from the normal one?
Thank you!
Sjoelund
Joined: 28-Mar-2012
Posts: 12375
Posted: 11-Sep-2021, 15:15
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Posted: 11-Sep-2021, 15:15
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Link please, I'm too lazy to look it up.....
Globetrotter
Coin varieties in French:
https://monnaiesetvarietes.numista.com
harryg
Joined: 26-Mar-2018
Posts: 2794
Posted: 11-Sep-2021, 16:01
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Posted: 11-Sep-2021, 16:01
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Quote: "Sjoelund"Link please, I'm too lazy to look it up.....
Metal content, but weights are virtually identical and because we don't know the % of the metals in each type, I'm not sure how they can be easily distinguished.
https://en.numista.com/catalogue/pieces5348.html
https://en.numista.com/catalogue/pieces94083.html
kommodore
Joined: 5-Nov-2009
Posts: 2966
Posted: 11-Sep-2021, 16:26
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Posted: 11-Sep-2021, 16:26
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Maybe magnetic or not?
rsirian1
Joined: 20-Nov-2020
Posts: 5759
Posted: 11-Sep-2021, 16:47
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Posted: 11-Sep-2021, 16:47
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Quote: "kommodore"Maybe magnetic or not?
There are many similar alloys that are called nickel silver. They are an alloy of copper, nickel and zinc. The most widely used is 62% Cu, 18% Ni, 20% Zn. Nickel silvers are non-magnetic just like copper nickel (70% Cu, 30% Ni).
Idolenz
Joined: 13-Jul-2013
Posts: 6591
Posted: 11-Sep-2021, 16:48
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Edited: 11-Sep-2021, 16:50
Posted: 11-Sep-2021, 16:48
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Edited: 11-Sep-2021, 16:50
You'll have to find another 1951 but the "trial strike" has a design that is a bit further away from the rim.
You would need at least 56 percent nickel content before Cu-Ni alloy shows any ferromagnetic properties at ordinary temperatures.
kommodore
Joined: 5-Nov-2009
Posts: 2966
Posted: 11-Sep-2021, 16:55
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Posted: 11-Sep-2021, 16:55
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Here s mine. Notice the strange silver look
Sjoelund
Joined: 28-Mar-2012
Posts: 12375
Posted: 11-Sep-2021, 17:18
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Posted: 11-Sep-2021, 17:18
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Quote: "Idolenz"You'll have to find another 1951 but the "trial strike" has a design that is a bit further away from the rim.
You would need at least 56 percent nickel content before Cu-Ni alloy shows any ferromagnetic properties at ordinary temperatures.
The border on the pattern coin is NOT rounded and the distances as said by Igolenz
Globetrotter
Coin varieties in French:
https://monnaiesetvarietes.numista.com
kommodore
Joined: 5-Nov-2009
Posts: 2966
Posted: 13-Sep-2021, 16:35
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Posted: 13-Sep-2021, 16:35
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There's some on ebay:
https://www.ebay.com/itm/154293611830?hash=item23ec9dad36:g:8IAAAOSwrhFgAfpX.
Looks like thats how they normally look, The CCCP is a bit lower on 1951
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