Sample card of indigo printing: double-sided cardboard with white patterns. 1. front side: Surface horizontally divided into two fields, with identical geometric motifs of dotted double circles arranged diagonally in the upper part, partially overlapped by toothed wheels with a dot in the center. Number 584 is glued in the top right corner. The lower field filled with identical flowers in a diagonal arrangement. Number 585 is glued on the right. 2. back side: Surface horizontally divided into two fields: identical stylized flowers made of leaves and dots arranged diagonally in the upper part. Number 586 is glued in the top left corner. In the lower field, strips of dotted flowers arranged horizontally, alternating larger with smaller ones. Number 587 is glued on the left.