Sim, G. 1869. Notes of Coins recently discovered in Scotland, Unicorns of James III. and IV., Half Unicorns of James IV., Ecus of James V., &c. Proceedings of the Society of Antiquaries of Scotland. 8, (Nov. 1869), 286–289. DOI:https://doi.org/10.9750/PSAS.008.286.289.