DIAMOND OVAL (OMN) by Richards & Hartley Glass Company/Pittsburgh, Tarentum-PA (Co. Operated: 1865-91), c1890 Introduced

Sid Lethbridge: the date should be c1890 but likely was well before then.

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Glass Display
Shape: Salts, open
Contributor: Robert Wilkin
Glass Display View
Shape: Catalogue/Ads
Contributor: Debi Raitz