Nicholas, Scottish Coins, NMS Publishing, Edinburgh (1998), Mackay – Mussel (eds.): Coin Price Guide to British coins 1066- Token Publishing Ltd, Axminster, Devon Ian Halley Stewart. The Scottish Coinage, Spink & Son, London, 1955 "Coinage" – in Collins Encyclopedia of Scotland (ed. Keay & Keay, 1994) External links Scottish coins until 1707 Digital Library Numis Online books and articles on Scottish coinage Coinage Coinage Kingdom of Scotland