Triands, Brockwitz
Quite scarce pieces. Shown are a cylindrical vase and a celery vase. These were part of an extensive line of shapes called Niobe by the German manufacturer, Brockwitz.

Vase, 8--9-inch cylindrical

Marigold, 20, 175 (both 2007), 20 (2010),
   25 (2014), 25 (2015), 40 (2017)

Vase, celery, 6-inch flared

Marigold, 25 (2006), 10 (2009), 40 (2011),
   25 (2015)

The Triands creamer shown at the left, the only shape that I've seen other than vases, sold on eBay (from England) in 2005. It brought $10.

Hartung Book Nine: Triands

Yet another shape in Triands that I wasn't aware of. It's an 8-inch plate in marigold. This one was offered on eBay in 2005 but didn't make the reserve at $33, but one like it did sell for $77.
Below is a page from a Brockwitz catalog showing the Noibe pattern.
There were many shapes, but not all were iridized. Catalog courtesy of Bob Smith.