Nasco Springtime Japan cherry blossom porcelain cup vintage

Sweet tea cup from Nasco's Springtime pattern, made in Japan. It is vintage but I don't know the exact age. Has some discoloration, a few stray marks, and some wear on the bottom, but no chips or cracks. Measures 2.5" tall and 3.75" across the top. Smoke- and pet-free home.