Geometric Forms Color Study Vintage Watercolor tool I'm not entirely sure of

I'm not entirely sure of the age

It is in fantastic condition and really just a little gem of a thing

with this matte copper colored finish worn away around the edges

NY" printed in silver on the top

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

Geometric Forms Color Study Vintage Watercolor tool I'm not entirely sure ofThis 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.