1.925 oz .999 fine Silver. The set contains the Britannia Core Mirrored Proof design in 6 sizes: 1 oz, 1/2 oz, 1/4 oz, 1/10 oz, 1/20 oz and 1/40 oz totalling 1.925 oz. All coins come encapsulated in a fine display box. Only 1,100 of these amazing six coin sets will be produced!