I think it's a glass vase, but the bottom is oval and the opening is shaped like a circle with a U-shape stuck into it.

I think it's relatively recent.

It looks like a designer piece.

It's so plain that it may be some kind of experimental equipment, but the details are unknown.

I think the right thing to do would be to use the shape of the mouth to arrange flowers.

The shape is attractive even on its own, so I think it would work well as an object.

Size

about ; W135*D60*H210mm