mlintalbot_ca wrote:I do not keep the CuNi and I was wondering what the % would be. Is it me, but this type of nickel does not age very well?
The oldest U.S. Mint nickel that I have is dated 1920, which is 75-25 cupronickel alloy according to this
link, and it looks nice and good, although less shiny and more worn than the newer U.S. Mint nickels.
For some ideas for some other old 75-25 cupronickel alloy coins that could be examined for how well they age, this
article states that “in 1879, Switzerland adopted the far cheaper 75:25 copper to nickel ratio then being used by the Belgians, the United States, and Germany” and that “the Greco-Bactrian kings issued the first cupronickel coins, with Euthydemus II, dating from 180 to 170 BCE, and his younger brothers Pantaleon and Agathocles around 170 BCE”. “Agathocles and Pantaleon, along with their contemporary Euthydemus II, are unique in the ancient world, in that they were the first in the world to issue copper-nickel (75/25 ratio) coins”, accordng to this
article.
“The silver is mine, and the gold is mine, saith the LORD of hosts.” (Haggai 2:8)