Slab Society: Where Currency Becomes Collectible Slab Society is a collector-focused format created by Stanley Millz that transforms real banknotes into sealed, authenticated artwork. Each piece is a one-of-one original—encapsulated, labeled, and built to be displayed, stored, and traded like a premium collectible. What Is Slab Society? At its core, Slab Society is encapsulated currency art : Real banknote as the base Hand-finished print and mixed media artwork in a protectiv