United States of America, USA/Australia, W.J. Taylor, mule Halfpenny, 1851, in copper, Liberty seated left, united states, rev. kangaroo right, melbourne, 6h (Baker 3A mule; A 475; KM. Australia Tn 245). Minor die rust, otherwise brilliant and as struck, extremely rare (£2,800-3,200)

Slabbed in SEGS holder, graded PR 64