Richard II halfpenny of London.

The coin is an apparently unrecorded variety of Withers Type 1, on which there is a line of raised dots across the king's breast. A very similar representation, commonly described as 'chainmail', occurs on some groats and halfgroats struck during the post-treaty period of Edward III. Edward's post-treaty coins, for which no halfpenny is known, immediately precede the earliest issue of Richard II.