A pair of French enamelled and mother-of-pearl opera glasses, late 19th century, with maker's mark for Premier Paris, retailed through Gurney & Ware, Kansas city, USA, having a folding handle and mother-of-pearl eye pieces, exquisitely enamelled with portrait medallions with enamel jewel and gilded ribbons, upon a sky blue ground sprinkled with tiny gold stars between pink and blue floral swag borders, width 11 cm