Open Rose, Imperial   Updated 1/23/2009

This is actually the same pattern as Imperial's Lustre Rose, though collectors have traditionally referred to collar based bowls and plates as Open Rose. I follow the simple rule--if it's collar based, it's this name, everything else is Lustre Rose. Imperial and several succeeding glassmakers reproduced this pattern. Above are a handsome 9-inch plate in purple and a large bowl in teal.
Plates, 9 inches

Amber, 95, 180, 190, 210, 300 (all 2007),
   40, 55, 115, 170 (all 2008)

Amber, electric irid., 1,700 (2005), 460 (2007)

Clambroth, 65 (1998)

Green, 75 (2001), 45 (2004), 55, 60 (both 2005),
   110 (2006), 50 (2007), 45, 260 (both 2008)

Helios green, 50, 175 (both 2002), 100 (2003),
   50 (2005), 15 (2006)

Marigold, 25, 30, 65 (all 2007), 35, 75, 80 (all 2008)

Purple, 1,200, 1,700, 2,000 (all 2005), 1,700 (2006),
   1,000 (2007), 575, 600, 850, 1,000 (all 2008)

Smoke, low ruffled, 260 (2004)

Berry sets, 5-7 pieces

Green, 50-80

Marigold, 50-70

Purple, 250 (2007)

Bowl, small berry or sauce

Amberina, 110 (2003)

Amberina, reverse, 120 (2004)

Blue, 800 (1999), 1,100 (2000)

Blue violet, 425 (1998)

Green, 18 (2006)

Marigold, 10-15

Marigold on milk glass, 110 (2002)

Purple, 185 (2007)

Smoke, 100 (2006)

Bowl, 7-9 inches, collar base

Amber, 20, 23, 25, 45 (all 2005), 48 (2007), 50 (2008)

Aqua, 100 (2003)

Blue, 80-120

Blue, powder, 75 (2006)

Blue, smokey, 90 (2004)

Clambroth, 25 (2007)

Green, 25 (2008)

Helios, 75 (1999)

Lime, 10 (2006)

Marigold, 25-40

Purple, 25, 75 (both 2005), 20, 35 (both 2006),
   85 (2007), 38, 50, 95 (all 2008)

Smoke, 30 (2003), 30 (2004), 20, 40 (both 2006)

Teal known

Vaseline, 95 (1999)

Basket, whimised from bowl

Red, damage, 565 (2001), 165 (2002)

Centerpiece bowls, see Lustre Rose.

The Open Rose rosebowl was crafted from the larger collar-based bowl.

Rosebowls

Amber, 30 (2004), 25 (2006),
   15, 30 (both 2007), 15 (2008)

Green, 45 (2003), 20 (2004)

Helios green, 23, 25 (both 2005)

Lime green, 200 (1998), 220 (2002)

Marigold, 20 (1988 and 2002), 10 (2002),
   30 (2005)

Olive, 50 (1998)

Purple, 125, 450 (both 2004)

Smoke, 200 (1998), 95 (1999)

Teal, 160 (2002)