Here is a glob of clear glass. With Armstrong Cork Co. Etched into the bottom. It has the Whitall Tatum triangle logo in center surrounded by M C W. Can only guess what the mcw stands for. Has a lot of wear scratches on base. A unique piece. Only ever seen or had this one. Measures approximately 4 1/2 by 3 1/2 by 1/2 inch thick. Asking $65 plus small flat rate priority mail shipping.