autoofset/ paper, 14x18 cm, signed and dated on board: ERosenstein / 1963 below in pencil: ERosenstein
work made for the "Confrontations" 1963 portfolio published by the "Krzywe Koło" gallery, issued in an edition of only 250 pieces and containing works by the most interesting artists working with the gallery.
Cf. Janusz Zagrodzki, Krzywe Koło Gallery (1956-1965) Works on paper - exhibition catalog; Radom 2015, p.196, item 71.