Fukagawa Japan Japanese iris blue white yellow porcelain ceramic vase vintage

Beautiful vase that according to my research was made by Fukagawa of Japan. I presume it is vintage but don't know how old it is. Measures 4.75" tall, 3" wide, and 1.5" across the opening. Design features a yellow iris in blue leaves on a white background with gold around the top rim. No defects noted. Smoke- and pet-free home.