COLLECTION OF 4 ART GLASS PAPERWEIGHTS: An assembled collection of 4 paperweights to include 1) Caithness blue and clear glass control bubble with etched dolphins, 3'' dia. 2) Clear glass with control bubble and iridescent freeform interior, signed Attra Vitrum '95, 3 1/8'' dia. 3) Illegible studio signed with hearts and vines motif, 2 7/8'' dia. 4) Iridescent blue with applied threaded hearts and vines motif, spurious Favrile mark on base, 2 3/4''.