Geometric Forms Color Study Vintage Watercolor tool stiff gray board and dated

stiff gray board and dated on the back 5/19/76

I am not entirely certain whether this is solid nickel or nickel-plated brass

Bottom half is 5 1/2" tall

with this matte copper colored finish worn away around the edges

Geometric Forms Color Study Vintage Watercolor tool stiff gray board and datedThis is the smaller of two abstract vintage watercolors I'm listing by the same unknown artist, I'd guess likely done as art school exercises, though I am not entirely certain. They've both got a bit of a Hilma af Klint vibe, this one with a more dense and saturated concentration of elongated triangular forms, transforming in color as they cross the outlined borders of the round forms. Luminous, it keeps making me think of a stained glass window.