I was digging through a bag of mixed antique ammo and found some cool .45 ACP cartridges from the US Cartridge company. From what Ive read, the bullets have cupro-nickel gilding, thus the silver color. All but one date to 1917, the other to 1918. I didnt know I had these, but they are perfect to go with my WWI era M1911 made in 1918.