This item is a cased glass spiral decorated center bowl bottom marked, Veort 1984" on the ground pontil. The piece is 4 1/2" deep, 11" in diameter, by 5 1/2" across the base. The exterior is solid black glass with a collar that starts the spiral rolled over the edge and extending downward 1 1/4". The spiral is done in red and green accented with black and white colored lines and ends in a black circle about 3/4" on the bowls interior bottom. The bowl has wonderful eye appeal with no wear or damage of any type. Please feel free to contact us with any questions or to make an offer.