Vintage Retro 70s Hand Painted Pottery Mushroom Mug Cup Planter Pot As-Is

This is a handmade ceramic coffee mug. Features retro mushrooms on a yellow and green background. Signed MM and dated 1973, does have a crack and small chip as pictured. Also appears that the handle was glued on, I would say this cup would be better used as a planter than for drinking (as pictured, plant not included). Measures 3.5" tall.