FOSTORIA GLASS CO. UKNOWN MUSTARD JAR (AKA) by Fostoria Glass Company (Fostoria-OH/Moundsville-WV, Company Operated: 1887-1986), Unknown Date of Introduction
NOTE: Gary Schneider 2021: Fostoria sold many opal dresser and tableware items to the decorating company H.M. Rios. Rios decorated and sold under their Keystone Ware line. The mustard above is not Fostoria's 1036 but possibly No. 767.
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Shape: Mustard/Horseradish
Contributor: Chris Hill Cooper 3.5H decorated by HM Rios for their Keystone Ware line

Shape: Mustard/Horseradish
Contributor: Chris Hill Cooper 3.5H decorated by HM Rios for their Keystone Ware line

Shape: Mustard/Horseradish
Contributor: Chris Hill Cooper 3.5H decorated by HM Rios for their Keystone Ware line