vintage McCoy pottery mug, smiley face yellow smile coffee cup, 60s 70s retro

Marked McCoy vintage ceramic happy face mug - 60s or 70s? Long before emoji faces! It's in very good condition, clean inside and out, no chips or cracks.

This measures about 4" tall, would make a great planter for a little succulent or a plastic plant (I used plastic plants in the photos here). Or use it to hold pencils, or coffee.