Dom Ruinart Champagne Ice Bucket Black Acrylic.  Designed by Emmanuel Dietrich. This has not been used except to sit on a shelf with an empty bottle in it.  There are some slight scratches on the sides from things bumping into it.  See last two photos for details.

Base is 6.5" x 7.5"

Top is 9" x 11"

Front is 8" tall

Back is 11.25" tall

Fits standard size 750ml or 1.5L Magnum bottles such as Ruinart, Veuve Clicquot,  Krug, Dom Perignon,  Moet and Chandon,  Perrier Jouet.