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 Replies: 10 / Views: 1,774 |
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Pillar of the Community
Lebanon
505 Posts |
Hello,
Someone presented a coin saying it is a silver one .Usually this coin is made aluminum but some specimen coins are made with a different alloy .
It has a very dark surface close to black with a bit of yellowish color between some letters .He said when he rubbed on a paper , it leave as track like pencil .
is it possible by these info to know if it is silver or aluminum?
Edited by chronos
12/25/2020 11:10 am
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Bedrock of the Community
United States
94367 Posts |
Can you show us pics with the diameter and weight?
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Pillar of the Community
 Lebanon
505 Posts |
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Pillar of the Community
Canada
5239 Posts |
It is very simple to tell aluminum from silver from the weight. You are probably wasting your time trying to figure this out when you are lacking basic, essential information.
Even without a scale, you can tell the difference by just holding one in the hand.
I think that Aluminum would be more likely to make a mark on paper.
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Pillar of the Community
 United States
5177 Posts |
I believe lead also leaves a black stripe on paper.
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Pillar of the Community
United States
4680 Posts |
 aluminum or lead. Just handled some aluminum wire today hanging a frame and in about a minute turned my hands black. Obviously as others stated, even a basic description/comparison of weight would be the end all here. |
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Bedrock of the Community
United States
20753 Posts |
Could be almost anything. I'd for sure would want to weigh it.
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Pillar of the Community
United States
7935 Posts |
I would not buy this coin unless it was very inexpensive, or I was sure I could return it.
As mentioned by @oriole, if you have it in hand, you don't even need a scale.... your senses can tell the difference between aluminum and silver objects because the densities are so different (i.e. we've all had the experience of holding an aluminum coin in our hands, so our senses are "trained" to recognize it).
Edited by tdziemia
12/26/2020 11:15 am
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Bedrock of the Community
Australia
21786 Posts |
The 1939 Hungarian silver 5 Pengo (KM#517), and the
1943 Hungarian aluminum 5 Pengo (KM#523), are a case in point.
Both 36 mm diameter, and of very similar designs.
The 1908 1/10 Penny of Nigeria British West Africa comes in two types:- one aluminum (KM#1), and one in copper-nickel, (KM#3). In this case, the designs are identical.
The aluminum coin in uncirculated condition is much scarcer and much more valuable, mainly due to corrosion problems.
Edited by sel_69l
12/26/2020 8:58 pm
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Pillar of the Community
Lebanon
505 Posts |
I agree with you I should have the weight or at least hold it in my hand , I think I can make the difference because I have seen many aluminum coins before , but sadly it is far away , and the seller is asking for a very high price for it.
The difference with the hungarian coin that sel 69l mentioned that this coin were made in aluminum only , few were found made maybe in brass but I haven't known any made in silver.
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Bedrock of the Community
Australia
21786 Posts |
Coin posted by chronos is World War 11 coinage, 1941 Lebanon 2 1/2 Piastres aluminum, KM#13.
Not highly valuable, but very hard to find.
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Replies: 10 / Views: 1,774 |
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Posted 12/25/2020 11:09 am
