Art Deco Butterfly Reverse Painted Glass Pewter Fish Ash Tray

Kind of funny that I bought this more than 50 years back in Rye New York. It probably was a souvenier from South America from the 1950's. Most likely an ashtray as the insert can be removed when smoking.  It is a reerse painted tray and there are butterfly wings in the background. I had this in a cabinet and often used it to place some smaller jewels in the tray. What a great form and quite rare indeed.  Measures approximately 4.25 length, 3.25 width .5 height.