Vintage Anchor Hocking Cobalt Blue Glass Footed Coffee Mug, Set of 3. Vintage Cobalt Blue Glass Footed Mugs by Anchor Hocking from the 1960s. Mid-Century modern decor. These are vintage and used, and may have some very minor wear. They are in good condition, with no chips or cracks. Measures 5.25 inches and have a capacity of 8 ounces. I have a total of 12 available. Please see other listings to purchase more or message me.