NOT EAPG: IMPERIAL No. 721 SCROLL FLUTED (OMN) by Imperial Glass Company (Bellaire-OH, Company Operated:: 1904-1984), 1920s Introduced
NOTE: Kathy Conn Turner - Imperial actually named this pattern Scroll Fluted. It was introduced in the 1920's, and the pattern number is #721. And yes, in Weatherman's second book.
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Shape:
Contributor:

Shape: Creamers
Contributor: Jane Bauer Bullock - opalescent would be 1930s

Shape: Pattern Detail
Contributor: Robin Fisher Cisne

Shape: Bowls & Berry Sets
Contributor: Chris Hayner

Shape: Bowls & Berry Sets
Contributor: John Pfaff