Not sure why this is called a Variant as it is not related to any other Cosmos pattern although the well-known Millersburg pattern has a similar flower without the wreath of leaves. Unlike the Millersburg Cosmos pattern, which is found only in green bowls 6 to 7 inches across, this one is found mostly in 10-inch bowls of various colors and occasional chop plates flattened from the bowls.
The example above is an exceptionally nice marigold example that sold at a Jim Seeck auction in 2020 for $75.
Hartung Book Five: Cosmos Variant
Bowls, about 10 inches Chop plates, about 10 inches, from bowls
Updated 11/25/2022
Amber with red swirls, 350 (2022)
Amberina with red streaks, 500 (2001)
Amethyst/amberina, 525 (2022)
Amethyst/purple, 20, 35 (both 2020), 20 (2021), 50 (2022)
Blue, 35, 60 (both 2014), 90 (2015), 40 (2020)
Marigold, 10, 20 (both 2019), 10, 75 (both 2020), 10 (2021)
Marigold, 8 5/8-inch, undersized, 40 (2017)
Oxblood, looks red, 115, 480 (both 2013)
Smoke, 75 (2003)
Amethyst/purple, 140 (2012), 250 (2012), 95 (2020)
Blue, 80 (2020)
Marigold, 50 (2019), 25, 30 (both 2020), 125 (2021), 60 (2022)