Obs. exc. Hist. Also 7 acheson, -ison. [Sc. pronunciation of Atkinson, name of the assay-master of the Edinburgh Mint in the beginning of James VI.’s reign. (Jamieson.)] A copper coin, coated with silver, coined in the reign of James VI., equal in value to eight pennies Scots or two-thirds of an English penny.
1605. Armin, Foole upon F. (1880), 14. A sallet of an atchison price, which in our money was three farthings.
1657. Colvil, Whigs Supplic. (1751), 68. Achisons, Babees and Placks.
1773. T. Ruddiman, Introd. Anderson’s Diplom., 137 (Jam.). The first whitish colour, which discovers itself in these atchisons, seems to indicate, that they are mixed with a little silver, or laid over with that metal.
