Complex sentence: They were copper cents bearing the portrait of King Kamehameha III. The coins proved unpopular due to the poor quality portrait of the king and the misspelling of the denomination ("hapa haneri " instead of"hapa haneli").
Split into simpler sentences: They were copper cents bearing the portrait of King Kamehameha III. The coins proved unpopular due to the poor quality portrait of the king. Although it is claimed the denomination was misspelled ("hapa haneri " instead of"hapa haneli").