This is a set of 5 Japanese Enamel, Blue & White Chinoiserie Porcelain Salt Cellars or Sake Cups,  

Blue & white porcelain gold floral salt dip petite salt dishes from Japan.  These are lovely porcelain with blue and white scenery pattern on the outside and lovely intricate floral geometric pattern on the inside, accented with metallic gold paint.

Measure 2 1/4" across and 1" deep.  

Marked on bottom "Made in Japan" in red and a blue mark on the bottom (illegible)