Cannonball
999.0 fineness, no goggles
Silver has been around for 5,000 years. Element 47, atomic mass 107.87, mined more than gold and used in basically everything — spoons, mirrors, batteries, photo film, your grandma's tea set. Quietly the most useful metal on the table.
Argentum is silver as a memecoin. Same shine, same 107.87 g/mol, same teeth. Gold gets the headlines. Silver does the work and grins about it on the way to the vault.