Five troy ounces of .9999 fine gold, a little over 155 grams, from a refiner on the London Bullion Market Association's Good Delivery list, which names the refiners whose bars LBMA has accredited as meeting its standards. The brand depends on what is in stock, so the design differs from bar to bar; each carries its refiner's stamp with the weight and fineness, and most a serial number.
Five ounces is an uncommon size, the step between the ounce and the ten, and the brand on this listing varies with stock. Each one is tested here before it goes out.