One Hundred Pounds 2020 Queen's Beasts - The White Horse of Hanover One Ounce Gold Proof currently unlisted by the Spink Standard Catalogue, with certificate and booklet, Certificate number 293 of only 435 issued, with just 390 in this presentation format. The informative booklet detailing the origins of the Heraldic White Horse back to the times of King George I, and it's origins first documented from the seal of Albert I, Duke of Brunswick-Grubenhaben in 1361. From the 14th Century, his kinsmen, rulers of other parts of Brunswick, also adopted the symbol.