I like the
War Nickels. Its interesting that there are both silver and non silver versions for 1942 Philadelphia - you have a silver version there.
https://www.coinstudy.com/1942-nickel-value.html and
https://coins.thefuntimesguide.com/...ickel-value/Circulated
War Nickels appear much darker and grayer in color than regular nickels. Some of these silver nickels also have a fairly streaky toning pattern — caused by the particular metallic composition and how it reacts to the effects of heat, perspiration, and other environmental factors. The color difference on uncirculated versions of the copper-nickel and 35% silver nickels is flipped — Mint State silver nickels usually appear much whiter in color than the copper-nickel specimens do.
Its also interesting they were trying to eliminate the nickel from nickels. In particular, those substitutes for nickel would not work properly in coin-operated machines because the machines test the weight of the coins, which would require retrofitting all those machines. In addition, silver does not have magnetic qualities which were also needed for the machines.
War Nickels were changed in their composition to 56% copper, 35% silver and 9% manganese from 25% nickel and 75% copper previously and this copper, silver, and manganese alloy was found later to be difficult to work with despite the initial benefit findings that it would still work in the eras vending machines both by weight of coin and is also checked by its electrical properties. So lamination problems and irregular oxidation of the coins are found if you look over them you might find some.
https://coinweek.com/modern-coins/s...d-varieties/