Sample book for blue print, double-fold cardboard printed on 4 sides with blue pattern. 1st side: printed area horizontally divided into two fields – top: small stylized flowers in diagonal stripes. Number 499 stuck on the right top. – bottom: dots in diagonal stripes. Number 500 stuck on the right. 2nd side: printed area horizontally divided into two fields – top: motif of inverted letters “S” in diagonal stripes. Number 501 stuck on the left top. – bottom: area filled with a dotted “maze”. Number 502 stuck on the left. 3rd side: printed area horizontally divided into two fields – top: motif of small stylized heart-shaped flowers in diagonal stripes. Number 503 stuck on the right top. – bottom: area filled with a dotted network of rhombuses with various deformed eyes. Number 504 stuck on the right. 4th side: printed area horizontally divided into two fields – top: motif of small stylized “beans” in diagonal stripes. Number 505 partially torn off stuck on the left. – bottom: motif of small stylized flowers with larger dotted flowers symmetrically placed in the area between them in diagonal stripes. Number 506 stuck on the left.