Opening hours 1-3 May 2018
1 May 2018 (Labour Day, Tuesday) - gallery is closed
2 May 2018 (Wednesday) - gallery is open from 2:30pm - 6:30pm
3 May 2018 (May 3rd Constitution Day, Thursday) - gallery is open from 11:00(!) - 6:30pm
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Poster: Konstanty Sopoćko "1 Maj. Niech żyje sojusz robotniczo-chłopski", 1948