Produced by Dugan Glass roughly 1915, the Rambler Rose pattern has been found only on pitchers and tumblers made of marigold, amethyst and cobalt blue carnival glass. This lovely tumbler is approximately 4 3/4" high. The Rambler Rose tumbler is cobalt blue glass. The carnival glass tumbler is in good condition with edges free of post production damage. The iridescence is good with some inconsistency.