Co-Operative / Cooperative Flint Glass Company of Beaver Falls, Pennsylvania, produced these beautiful Eapg tumblers in 1891! This fabulous antique pressed glass pattern is called "Columbia", a.k.a. "Co-op's Columbia". An outstanding pressed glass pattern - with 12 vertical panels separated by zippered ribs, 6 large 'bullseye' around the center, and a fancy pressed star design bottom. Each tumbler measures 3 3/4 inches tall X 3 inches across the top rim. All FOUR tumblers in this set are in VERY GOOD condition - with NO chips or cracks, each one does have a bit of minor cloudiness on the interior - it is really only noticeable when held up to a bright light, but, mentioned for complete accuracy. (I suspect they may have been cleaned in a dishwasher!) This old glass glows a lovely yellow-green under uv light to further verify age! ~~ Truly a gorgeous set of Eapg tumblers!