Quill, Dugan
Named for the quill shaped designs around these pieces. A few water sets are known, but the tumbler comes up for sale most often. Only in amethyst or marigold.

Water sets

Amethyst, 7 pieces, 1,550 (1998), 900 (2009)

Amethyst, 6 pieces, 475 (2009)

Amethyst, 5 pieces, 875 (2011)

Marigold, 7 pieces, 375 (2009)

Marigold, 6 pieces, 1,400 (2002)

Water pitchers

Amethyst, 850 (2001), 1,100 (2008), 400 (2009),
   550, 950 (both 2015)

Marigold, 575 (2006), 325 (2007), 600 (2011), 260, 500 (both 2015),
   280, 775 (both 2016)

Marigold, with 1 tumbler, 650 (2010)

Tumblers

Amethyst, 100, 125 (both 2008), 190 (2011), 120 (2012),
   275, 325 (both 2015)

Marigold, 140 (2010), 115 (2011), 130 (2014),
   130, 140, 155, 170 (both 2015)

Updated 2/3/2017