Blue 20 yen stamp: filigree curved lines, perforation (13 height; 13 width), dimensions (18.5 mm width; 22 mm height)

Brown 20 yen stamp: filigree zig-zag lines, perforation (13 height; 13 width), dimensions (19 mm width; 22.5 mm height)

Olive 8 yen stamp: filigree zig-zag lines, perforation (13 height; 13 width), dimensions (19 mm width; 22.5 mm height)