Jiri Valoch. One or two exercise(s)

Off-white sheet, folded in 4 sections, with printed typed text in black. Signed 'Jiri Valoch 1983' in pencil in lower margin.

Texts in separate sections in both Czsechoslovakian and English read: 'one or two exercise(s)'; 'the moment when day ceases to be day and begins to be night'; 'the moment when night ceases to be night and begins to be day'. Excellent copy.