Possibly homemade mug, brown green glaze, marked 1964. Closely resembles Duncan Nubby Headdress mugs from Tiki Quest, p. 62.
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Tiki Mug Design
Handled Nubby Headdress Mug
in 1 collection
This nubby headdress mug features the head of a tiki with a headdress made up of little bumps. It has a handle on the side. Most likely produced by a hobbyist.