Vintage Libbey Glass Duck Mallard Waterfowl Beer Tankard Mug Stein Set of 2

Vintage Libbey Glass Duck Mallard Waterfowl Beer Tankard Mug Stein Set of 2. The mugs have a round shape and a capacity of 14 fluid ounces. They are clear with multi-colored decorations and feature a fused glass production technique. The waterfowl pattern depicts a duck mallard. The mugs are dishwasher safe and have a handle for easy use. They were produced in the United States during the 1950s and are an original Libbey product. Excellent Condition - I have never used these as they have just been in my cabinet. Numbered 17 + 31 on the bottom.