Collotype picture postcard 〈Five Seasonal Themes Fuyukomori〉Author unknown

Size: 14.0 x 9.0cm Printing method: Glass plate (collotype multicolor printing)
Work information: Artist unknown (production year unknown) Collection of the Museum of Fine Arts, Boston

○ What is Collotype?
Offset printing, a common printing method, expresses colors and shades with a density of small halftone dots, but collotype expresses continuous gradation, so it expresses fine details that are closer to the real thing than photographs. .