This MCM Murano art glass paperweight is attributed to Archimede Seguso. Featuring a pulled feather design that wraps around the paperweight creating an abstract flower on the bottom with the concave base! It is a matte black amethyst & white satin glass. Remnants of old sticker residue on the bottom. Scrapes and scuffs are normal with age. No chips cracks or crazing. Please refer to all pictures. I will gladly answer all questions.