Siri Berg (Swedish/American, 1921-2020), Untitled (Half Circle Grid), Acrylic on Canvas, signed and inscribed "cat. # 106" to verso, unframed. 35" H x 35" W. Provenance: From a New York City Collection. Keywords: Painting, Op Art, Optical Art, Geometric Abstraction, Minimalist, Minimalism, Indigo, Grey, Blue, Cool tones, Contemporary Art, Women Artists