These charming 1970s coffee mugs are from Arnel’s, a ceramics company best known for its mushroom designs. If you like them, Etsy is teeming with other 'shroomy kitchen objects made by the quirky company, such as cutting boards, serving dishes, soup tureens, and much more.

From the brand: 

Set of 2 vintage 1970s Arlen's Mushrooms Tea Coffee Mugs Cups 3,5 ''x 3,5''. Great condition.