Leon Bibel (Polish/American, 1913-1995), "Urban Turmoil", 1936, pen and ink on paper, unsigned, artist estate stamp on reverse of mount, "Park Slope Gallery, Brooklyn, NY" label on backing paper, 10 1/2 in. x 8 in., framed, overall 19 in. x 16 3/4 in. x 1 in.; accompanied by a copy of a certificate of authenticity from the Estate of Leon Bibel and Park Slope Gallery, signed by Neysa Bibel with title and date. (2 pcs.)

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