Saint Patrick's Money
Half Pence and Farthings bearing upon the obverse a figure of King David kneeling and playing on the harp. On the reverse is the standing figure of St. Patrick with a cross or crozier in his hand.
Simon classed these coppers as Irish siege-money, and states that they were struck in Dublin in 1643. Philip Nelson, however, in a paper contributed to the British Numismatic Journal (i. 184), proves without a doubt that they were not issued prior to 1678. They are sometimes called " Newby Coppers " , because Mark Newby brought a quantity of them from Ireland to New Jersey in 1681, and they were used for a time as currency in that State. See also British Numismatic Journal (iii. 219-222).
Source: Frey's Dictionary (American Journal of Numismatics, Vol. 50, 1916)