SWIRL (AKA)nat/nw by National Glass Company (Northwood Works) (Indiana-PA, Co. Operated: 1899-1904), date unknown
NOTE: Gene Serbus 2023: vase 5.75 inches in height, blue opalescent with 20 spiral stripes. The rim is decorated with ruby frit. Shape not seen in National or Northwood catalogs
image 1 of 2

Shape: Vases, Rose Bowls, Ferners
Contributor: Gene Serbus 5.75H

Shape: Vases, Rose Bowls, Ferners
Contributor: Gene Serbus 5.75H

Shape: Vases, Rose Bowls, Ferners
Contributor: Gene Serbus base

Shape: Baskets
Contributor: Gene Serbus has the same swirls and "grainy" base as vase