More to explore:
Vintage 1970s Otagiri Stoneware American Eagle Wilderness Coffee Tea Cup Mug | eBay
Stoneware tumbler with frog by TeriWhitnerArt on Etsy, $18.00
Otagiri mug with horses by ScribbleFitz on Etsy, $10.00
Vintage 70s Stoneware Mug
Olive Green Ginny Weasley Anything's by OpheliasGypsyCaravan, $16.00
Sea Horses! When I was a child I thought they were mythical.
good morning! by wood & wool stool, via Flickr