Blue block print sampler, cardboard double sheet printed on 4 sides with a blue pattern. Side 1: printed area horizontally divided into two fields – top: grains and dots in diagonal stripes, number 380 in the center. – bottom: small stylized shapes made of dots in diagonal stripes (three smaller and two larger), number 381 in the center. Side 2: printed area horizontally divided into two fields – top: small, indistinct shapes in diagonal stripes, number 382 at the top. – bottom: stylized small shapes in diagonal stripes, composed of a dot and a curve above it. Number 383 in the center. Side 3: printed area horizontally divided into two fields – top: small ornamental motif composed of a curve and a dot in diagonal stripes. Number 384 above them. – bottom: small ornamental motif of a triplet of leaves on a stem in diagonal stripes. Number 385 in the center. Side 4: printed area horizontally divided into two fields – top: small ornamental motif composed of five dots in diagonal stripes. Number 386 in the center at the top. – bottom: small ornamental motif of “branches” with leaves in diagonal stripes. Number 387 in the center at the bottom.