SMOOTH RIB (AKA) by Jefferson Glass Company (Steubenville-OH/Follansbee-WV, Co. Operated: 1900-1930), Uncertain Date of Introduction
NOTE: Gene Serbus: Carwile lists this as "Smooth Rib" in Standard Encyclopedia of Opalescent Glass" 6th edition page 135
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Shape:
Contributor:

Shape: Novelty Worked
Contributor: Don Jackson

Shape: Bowls & Berry Sets
Contributor: Nancy Dawson

Shape: Catalogue/Ads
Contributor: Gene Serbus

Shape: Novelty Worked
Contributor: Jillian Amanda (1,3), Crystal Wilkinson (2,4)

Shape: Novelty Worked
Contributor: Gene Serbus