Dakers, C.H. 1938. Notes on Scottish Coins: (1) Rex Scottorum Pennies of David II.; (2) Edinburgh Light Groats of Robert III.; (3) Some James II. Groats of the Third Variety of the Fleur-de-lis Groats; and (4) Gilbert Kirkwood’s Mark on a Gold Coin of James V. Proceedings of the Society of Antiquaries of Scotland. 72, (Nov. 1938), 122–128. DOI:https://doi.org/10.9750/PSAS.072.122.128.