Unique Red Yellow Butterfly Long Narrow Sash

EUC with no rips or stains. Beautiful and well made. Not really sure WHAT it is, but its very long and narrow. One side is red with yellow golden and white butterflies in bubbles. Other side is Textured geometric pattern throughout in a marigold yellow. No fabric content or brand label. Feels like heavy satin. 6 in wide x 140 in long. Narrow extra long table runner drapery sash