1970NEPŘIJATÝNÁVRH on stmp 30h, Constitutive conference SSM (Pof.1852), 3 pcs of size 18x14cm, printing by pencil and crayon on yellowy paper, unknown author
1970 SVOLINSKÝ K. - Kytice, stamp design, printing trial, 3 stages of print, comp. 3 pcs of bloks of four, print on stamp paper with gum; mint never hinged