2.83 grams; 19.33 mm.1966 A.D. Obverse: Young laureate head right. Reverse: Interlace rose, thistle, shamrock and leek. A rare coin as when the milling machine struck the design onto a blank flan this coin was lodged, and the other coin has been forced onto this one leaving a round section missing from 4 o'clock. S 4149. About Uncirculated and an Excessively Rare milling error.