Elektra, Riihimaki and Brockwitz
The pattern has alternating multi-pointed stars and whirling stars. There were quite a few shapes in this line shown in both Riihimaki and Brockwitz catalogs. As with many Brockwitz shapes, this 5-inch wide open sugar did double duty. It was marketed as both an open sugar and the base to the fruit bowl, as seen in the catalog pages below. It sold for $20 at a 1996 auction.

In 2020, an item described as a 6-inch blue banana boat sold for $40

An Elektra vase owned by Joan Doty. It is 9 1/2 inches (24 centimeters) tall. These vases are also known in blue. Whether this one is the Riihimaki or Brockwitz version is in question, but it certainly appears to match the vases shown in the Brockwitz catalog below.

In 2007, a 10-inch vase in marigold sold for $200.

In 2019, a 9 1/2" blue vase sold for $250.

in 2020, a 10-inch vase in blue sold for $90.

Updated 12/13/2020

Below are pages from a Brockwitz catalog showing the Elektra pattern.
There were many shapes, but not all were iridized. Catalog courtesy of Bob Smith.