OPEN O'S (AKA) by National Glass Co. 13 [Northwood Works] Indiana-PA (Operated: 1899-1904), c1903 Introduced

• AKA: Heart Handled Open O's
NOTE: This pattern was continued by Dugan Glass Co. 1904.

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Glass Display
Shape: Catalogue/Ads
Contributor: Paul Kirk Jr.
Glass Display View
Shape: Novelty Worked
Contributor: Bill Banks 6-13-26
Glass Display View
Shape: Novelty Worked
Contributor: Contributor: Bill Banks (1-5), Chip Honse 2/28/2026
Glass Display View
Shape: Novelty Worked
Contributor: Brian Widner, May Ridolphi Eason, Roger Haworth, Jennie Klecker
Glass Display View
Shape: Novelty Worked
Contributor: Vanessa Fronce, Nancy Dawson
Glass Display View
Shape: Catalogue/Ads
Contributor: Paul Kirk Jr.