Photographic documentation of the ghostly apparition of Zef Bumçi’s Traktati polako-gjermanoperendimor (Polish-West German Treaty), 1970, on a billboard located on Rruga “5 Maji” – Tirana, Albania, between 8AM – 9AM. Selected by Alban Hajdinaj. Courtesy of the artist and all who preserve Zef Bumçi’s work. Photo: DebatikCenter of Contemporary Art.