A fine pair of French enamel, brass and mother of pearl opera glasses, Royal blue enamelled and jewelled barrels, with mother of pearl caps, inscribed 'J S Marratt 63 King Willm St Optician London Bridge'. Invented in the 19th century, this must-have accessory for the elevated social classes and were designed to be used at the opera house for a better view of the onstage performances. Circa 1880 10.2 and 10.5cm wide (2)