Maria cheapest von Ridelstein original portrait painting

Great vintage signed portrait oil painting by known artist Baroness Maria von Ridelstein.
On canvas.
It's a funky piece, purchased from an estate in Northern California.
She is a well known artist, cheapest who lived from 1884 - 1970.
She died in San Francisco.
This painting has an unfinished look, with part of the base paint chipped off at the bottom.
Wrapped on board.
24x17.5
A really rare and cool piece.
Her paintings sell in the hundreds.