1967, black stamp on paper (62/100), 11,5x16 cm, signed lower right „J. Koller 1967“
1971, green stamp, marker on paper, 12x16,5 cm, signed center down with stamp „J. Koller 1971“
1977, color serigraphy on paper, 13,7x9,3 cm, signed centerin print „Július Koller“
1977, color serigraphy on paper, 12,5x15,5 cm, signed upper left in print „J. Koller“
1991, color markers on paper, 45x33 cm, signed down „Július Koller“, „Mišo Hrapko“
Provenance: Author´s family.
1983, serigraphy on paper (author´s copy), 31x27 cm, signed lower right „Kveta Fulierová 1983“
1968, lithography on paper (93/100), 29,5x15,2 cm, signed lower right „Kveta Fulierová 1968“
1966, woodcut on paper (author´s copy), 29x16 cm, signed lower right „Kveta Fulierová 1966“
2014, object – wall clock, Ø 18,5 cm, signed on right side „H. 2014“
2014, object – wall clock, Ø 18,5 cm, signed on right side „H. 2014“
1993, oil on plywood, 14,5x11,5 cm, signed lower right „Fridrichová 93“
1996, oil on plywood, 13,5x11,5 cm, signed lower left „Fridrichová 96“