This is a single coffee cup or mug by Shenango China. It is restaurant ware with a red floral design. The pattern is not named, it is a numbered pattern SHO2. This is a vintage, discontinued pattern. The cup is 3 3/8" wide and 2 7/8" tall. It is in very good condition. There is a small, flat chip on the bottom rim, it may be a manufacturing flaw.
Shenango China Restaurant Ware Red Flowers Cup Mug