I believe the name is Japanese and is Takeshi especially given pink dogwood are a very popular Japanese art subject.  It is also possible it is Chinese for Wu, but the subject matter leads me to believe Japanese.

Aqua Background with Pink Dogwood Flowers and Leaves

The artist also has enameled the back.  I took a photo of the edge or rim of the plaque so you could see the copper.   It is heavy and measures 7 1/8 inches by 6 inches.