Need help to ID this brown loball mug

Like the subject line says, any help with identifying the origins of this brown slipcast 2 faced mug would be helpful
about 3.5 inches high by 3.5 inches in diameter.
flat foot
Can't find it on Ooga-Mooga, but if its there please show me.

Thanks!

These are a few examples from Ooga-Mooga. They are hobbyist pieces. I know that Duncan Ceramics made the first mold, but I'm not sure if they did all of the molds in this two-face tiki style. There are several others.

Thanks Tiki-Kate!