Vintage Cobalt Blue Libby Glass Coffee Mug Cup 3.75" tall, Made in USA

This is a single cobalt heavy glass mug, marked Made in USA with the number 26 on the bottom, typical of vintage 1970s Libby. Mug is in good condition with no defects noted. A nice addition to a cobalt glass or vintage mug collection. Measures 3.75" tall x 3.5" diameter and weighs 450 gm.