Kumiko Yamashita Style Print Framed Monochrome Abstract Art Stairs Signed Contemporary Art

This is a monochrome abstract print.
It is an impressive composition featuring motifs such as stairs, boxes, and figures.
There is a handwritten signature at the bottom that appears to read yamashita.
There is an inscription HC 1/30 in the lower left corner.
Google Image Search identified this as a work related to Kumiko Yamashita, but as I am not an expert, I cannot guarantee the artist or authenticity.
Therefore, this work is listed as being in the style of Kumiko Yamashita.
The technique appears to be a printmaking method, but please judge the details from the images.
It comes with a frame.
There are stains, yellowing, and dirt on the matting.
The frame also has scuffs, scratches, and signs of age.
Please check the photos for the condition.
This is for those who understand used framed art and art pieces.

Kumiko Yamashita, Yamashita, Print, Contemporary Art, Abstract Art, Monochrome, Stairs, Framed, Signed, HC, Artist's Work, Interior, Art

A word from the master:
What lies beyond the stairs? The work's appeal lies in its refusal to provide an answer.