Pair of 2 mushroom soup bowls cups, mushroom art drawing, vintage ceramic; est. 1980s

Set of two mushroom soup bowls cups with a mushroom pen and ink art drawing. This vintage ceramic soup bowl pair is estimated to be circa 1980s. When you look close, the pen and ink drawing is really well done. The manufacturer is unknown; there are no markings. (If you know, I would love to learn!) Both bowls are in terrific condition - there are no noticeable cracks, breaks, or chips. The backside is solid white. The bowls' openings measure just over 4 inches, and they stand ~ 3 1/4 inches high.