By Jósef Mehoffer, entitled Vita somnium breve (Life is a short dream). Stained glass.
As far as I can tell from Google translate, the words along the bottom mean "Krakow factory of stained glass and mosaics. S.G. Zelenski in the year 1902". The work was donated to the National Museum by the Zelenski family in 1934.
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