Ash tray is part of Duncan's Pall Mall line. This one is 8 1/2 inches long and 4 1/4 inches wide.
Duncan made this item in crystal, opalescent, ice blue, black and with a ruby stain.
Both Tiffin and Tiara used the original mold to produce the ash tray in other colors. This example is Tiffin's production in a color they called Desert Red.