Metals, by weight.

Log grams of gold or ounces of silver. Holden will not fetch a spot price or store what you paid.

Presets include gold (XAU), silver (XAG), platinum (XPT), and palladium (XPD). Custom units work when your bar or coin needs its own name.

Each collection is quantity and time. The card shows how long you have held, not what the metal is worth today.

The puzzle well fills as the stack grows. Watching the picture complete is the reason to stay — not a tick on a quote screen.