Collection of 3 Antique Dugan & Fenton Amethyst Cobalt Carnival Glass Tumblers

What a tapestry of rich purple and deep blue, with glimmers of gold, green and pink!  The tumblers are all approximately 4 inches tall. They are:  Butterfly and Berries in blue, Fenton Maple Leaf in amethyst, Dugan Floral and Grape in amethyst, Dugan & Diamond  I believe these are all antiques, but am not an expert so cannot confirm.  It is very likely as they are all part of the same estate collection and share a softened, satiny patina, with moderate pitting and scuffs from wear that seem consistent with significant age.  It's certainly not enough to affect their display beauty or functionality; it only adds to their antique charm. They're in very good condition with no chips or cracks