Federal Glass Mini Whiskey Mug Shot Glasses

Lot of 4 vintage Federal Glass Co. #2517 handled mini mug whiskey shot glasses. Two have the Federal shield mark, the other two do not and are more flaired at the bottoms. 1 ounce, 1 ⅞" tall with a 1 ½" diameter. No chips or cracks, one marked is slightly shorter then the others ( see last pic ).