Description Antique license plates for different years disappear to reveal classic antique cars in that model year. Featured on mug; 1931 Model A Roadster, 1932 Cadillac, 1934 Ford Roadster, 1936 Jaguar, 1937 Cord, 1939 Woody. Microwaveable silver lip. Wonder mugs are color-changing coffee mugs that change dramatically when a hot beverage is added. If you’re looking for a unique gift for them, what a unique way to remind them of you daily! These unique, high quality gift mugs utilize color-changing or “thermochromatic” ink that changes color when hot beverages are poured into the inside of the mug. Color change gift mugs are ideal for fund raisers, birthday gifts, teacher’s gifts, corporate gifts and more. All Wondermugs are microwavable. We recommend hand wash only to preserve the magic Wondermug ink.
