Glass Chatroom Board

I gotta plead ingorance. We bought a piece of art glass yesterday, sort of a oxblood over white die-away, or glossy Burmese look, with applied and gilded flowers, stems and leaves. On the bottom was a sort of rose colored stamp I've heard called a propeller. I know I've heard it discussed and its not a propeller, but I can't remember what company applied it to their wares. Help, and thanks in advance.