Dancing Ladies, Fenton
Not sure this piece should be included in a Carnival Glass context, but it is iridized. It is from Fenton's mid-1930s production and is in the color they called white Persian Pearl. Oval (9 1/4 inches long by 7 1/2 inches wide), it sold at a 2009 auction for $2,200. Supposedly it is the only one known.
This ruffled marigold Dancing Ladies vase sold in 2020
for $1,400, another sold in 2021 for $1,600.
Photo courtesy of Wroda auctions.

Also in 2020, a similar vase in peach opal brought $90.

Also see New Dancing Ladies

Updated 12/12/2020