What is Billion?

Hello People of the World
I wanted to know what is billion metal?
wiki doesn't explains clearly.... So You may make me understand better


Best Regards
Sayan

Verweis : "Sayan"​Hello People of the World
​I wanted to know what is billion metal?
​wiki doesn't explains clearly.... So You may make me understand better
​
​
​Best Regards
​Sayan

​maybe it said bullion ??

Gold or silver in bulk before coining, or valued by weight.

I think you mean billon. It´s an aloy of silver and base metal. The silver content is very low.

Now I got it
Thanks to All :)

Yes, the silver content is sometimes so low that when mixed with the other
metals the resulting coin does not look like it has any silver in it.
https://en.numista.com/catalogue/pieces1139.html

That is one I have, and only when I looked it up on here I saw that there was some silver in it.

Yes Billon is a mixture of silver and base metals, usually copper. I believe it was used when there had to be a certain dollar value of silver in the coins but the silver price fluctuated, so some years they would only have to put 20% silver when minting the coins and other years they might have to put 30% silver in to get up to the right amount of silver.

The issuing of billon coins also presented an opportunity for the government to make some extra money. At least it was the case in Scotland, it wouldn't surprise me if other countries did it too. Scottish billon was often overvalued, allowing the monarch to make an easy profit.

Here are a few of my Scottish billon pieces.

Billon alloy is pretty common for Roman coins, specifically for Double denarius coins of 3rd-4th century (also called Antoninianus).
Part of the Roman monetary system was tied to the weight of silver per coin, but many monetary devaluations occurred during Roman Empire era and progressively silver content of lower value coins was reduced to around 5% following Emperor Aurelian monetary reform around 275 AD. As it's an alloy made with a major content of base metal (mainly copper) this gave billon coins made almost of copper/brass alloy. That's why billon coins may have some green oxidation due to higher copper content, as this one struck right after the Aurelian reform: https://en.numista.com/catalogue/pieces103123.html

https://en.numista.com/catalogue/pieces29945.html
This is probably my lowest Silver content coin, an 1833 Ottoman 5 Kuruş, and the percentage at 17% is so low that when I bought it at the Grand Bazaar in Istanbul I thought that it was either Copper or Bronze.

Verweis : "radrick007"​https://en.numista.com/catalogue/pieces29945.html
​This is probably my lowest Silver content coin, an 1833 Ottoman 5 Kuruş, and the percentage at 17% is so low that when I bought it at the Grand Bazaar in Istanbul I thought that it was either Copper or Bronze.

​You don't have any of the Mexican 10% Pesos? That's the lowest I've seen. I did have a German States coin that was supposed to be 25% or so but it had a distinct copper colour.

Either mexican peso or Switzerland 10 or 20 rappen. All .100

The billon Lion/Hardhead (1.5d) of Mary Queen of Scots had a silver content of about 4.2%