Haven`t found it yet but my second thought after ashtray was a bar condiment tray !! Lemons on one side, lime on the other and olives down that center slot !! From the era when martini`s were the uptown drink along with the whiskey sour, manhattan, ect !! Since that WL on the bottom is raised,, that would likely have been the way the mold was made so had to be more than one !! I didn`t see any lines around it that would make me think it was stamped by hand !!