History of the halfpenny . The halfpennies of the first reign of King Edward IV (1461–1470) are divided into the heavy coinage up to 1464, which was only minted in London, and the light coinage from 1464, produced at London, Bristol (now ), Canterbury (), York, and Norwich (). The obverse inscription reads . During the short second reign of Henry VI (1470–1471), halfpennies were produced at London and Bristol. The obverse inscription was changed to read . Halfpennies of the second reign of Edward IV (1471–1483) are much like those of the first reign (only a few months earlier) but they were also
Cham–Vietnamese War (1471) and once their economies recovered, these two kingdoms went to war again. When fighting resumed in 1471, the Champa kingdom found itself weakened and isolated. It has experienced numerous civil wars and, at one point, had five different rulers. For its earlier attack on Angkor, the Khmers ignored the Cham's request for assistance when Vietnam invaded. The Cham also requested Ming China to intervene by helping bring the Vietnamese back in line by force and demarcate the border between Champa and Vietnam. China, however, only verbally rebuked the Vietnamese for its incursion, which the Vietnamese ignored, proceeding with its attack