15th century AD. O'Reilly group A (from Henry VI rosette mascle issue"). Obv: facing bust within tressure, clipped down to inner circle. Rev: long cross and pellets dividing VIL LA CALI SIE inner legend with mascle before LA and rosette after SIE, clipped down to inner circle. See Dolley and Seaby, Le Money del Oraylly (O'Reilley's Money), in British Numismatic Journal, vol.XXXVI (1967), pp.114-117 for discussion and pl.XIV, 1-13 for illustrations; see website https://oldcurrencyexchange.com/2016/03/29/obrien-rare-coin-guide-oreillys-money-1447-1459/ for further discussion of O'Reilly money, with illustrations of examples; for original host coin, S. 1446. 2.06 grams. . These clipped groats usually weigh near to 30 grains (this example is at 31.8 grains) and such pieces circulated in Ireland despite attempts to suppress them, including Acts of Parliament between 1447-1463 AD. [No Reserve] Good fine.