CENTENNIAL HONEYCOMB (AKA) tgc by Cook, Thomas G.& Co. (Philadelphia PA c1870s), 1873 Introduced
NOTE: Sid Lethbridge 2021: The use of Centennial on the base with the trademark mentioned is sufficient to assign... to this company
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Shape: Catalogue/Ads
Contributor: Sid Lethbridge internet blurb

Shape: Patents
Contributor: Sid Lethbridge This trademark was for the word "centennial" intended to be pressed into glass or blown, moulded and pressed into the glass.

Shape: Stemware
Contributor: Donn Applemann AKA CENTENNIAL HONEYCOMB 5-7/8H x 3D

Shape: Stemware
Contributor: Donn Applemann