A Set of George III Patent Sun GlassesCirca 1800 maker's IS, London, 1804 With hinged double blue tinted lenses and with adjustable arms, engraved Richardson's Patent, in a silver-mounted shagreen case, 12.6 cm high a small silver-mounted shagreen etui, lacking contents but with a pair of miniature bright-cut spoons, apparently 1789, a further miniature spoon, knife and fork, unmarked and a pair of tweezers .Footnotes:London optician John Richardson patented the swinging auxiliary lens idea in 1797. They were popular in the early 19th century because apart from providing auxiliary lens power, the auxiliary lenses also provide eye protection when travelling by train. The hallmark E.T. is for Edward Thomason. John and Matthew Richardson (father and son?) are recorded as working in the optical trade 1716 to 1827. Matthew was apprenticed to Edward Scarlett (1677-1743) the London optician credited with introducing straight sides for spectacles designed to slide under a wig.This lot is subject to the following lot symbols: YY Subject to CITES regulations when exporting items outside of the UK, see clause 13.