Classic "Cloud" Glass Flower Vase- Any Ideas on who dunnit?

This past summer I purchased this little Green Flower Vase from a friend of mine who didn't know too much about it. I liked the Quality of the glass and the "Cloud-like" treatment. It stands 6 5/8" tall with a 2 3/8" opening, has a flat polished rim and base and is cased with an outer clear layer. There are no markings and no mold marks. I know that it's not European CLOUD GLASS by Walther or Davidson but does anyone recognize this little vase or know the maker? Thanks all, RER(BOB)