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Modernist tubular chrome and glass shelving unit. I could find no markings. Piece is in very good used condition showing a little wear. There are a few areas of tarnish / rust. Most will either disappear or look quite a bit better after being polished but there are some spots of damage. The entire shelf can be disassembled so some of the worse parts could be turned around and hidden, they are not awful anyway. Glass has a number of scratches and a few minor chips. Piece isn't perfect but overall very good condition.
I have quite a few mid-century / Danish modern pieces listed if you want to look at the "more ads by this seller" link in this listing.
Piece is available in Northern RI. I am located about 20 minutes from Providence and a little over an hour from Hartford or Boston.