Ten troy ounces of .9999 fine gold, 311 grams, from a refiner on the London Bullion Market Association's accredited list. The brand depends on inventory; the weight and purity marks follow the LBMA standard whichever refiner struck it.
Each bar comes in its refiner's assay card. Ten ounces is the largest gold bar most people will ever hold in one hand, and it is smaller than it sounds: about the footprint of a phone, a third as thick.
