I have a soft spot for these OOH R-1 "Headhunter" mugs. This one was my favorite mug in my collection. Its details were very well-defined, especially on its sides, which is where you'll typically find the worst casting and glazing errors on these mugs.
I gave it away to a professor who specialized in South Pacific art as a thank-you gift. I'm leaving it listed here in memoriam. Now that I have a stable income, I think I'll replace it with a new one sometime soon.