This is a hard to find set of tumblers produced by Dugan Glass in their Shell pattern, The pattern is more commonly referred to as the Beaded Shell pattern. It was produced by Dugan in 1905. It's hard to find a complete set of six tumblers like this! The mold and color is good, with nice fiery opalescence. The tumblers stand 3 3/4" tall. They are in good condition with no chips, cracks, or repairs.