1771 Contemporary Counterfeit Halfpenny. George III English Type—Off-center Reverse Brockage—Very Fine.81.2 grains. A fascinating double error, featuring an approximately 20% off-center strike in conjunction with a brockage strike of the reverse die. Lightly cleaned long ago, now mostly recovered to a light salmon-brown hue.From the Sydney F. Martin Collection. Earlier ex Robert Jones via eBay, 2014.