When I read about the 1928 Hawaiian Discovery half it brings to mind that in 1928 the US Mint also issued the Oregon Trail half - and the representations of the Native American chiefs covey two different emotions:

In my interpretation, the Native American chief represented on the Oregon Trail coin is standing in a braced position with his left arm extended, hand palm forward willing the settlers to stop entering his land as viewed by the wagons behind his right elbow.
In contrast, the Hawaiian Native American chief extends a welcoming hand with the beauty of Waikiki Beach and Diamond head viewed in the background.
Quite the contract to my eye.
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