Think 20th Century icons. Grace Kelly. Peter Sellers. Michael Caine in his signature black spectacles. Audrey Hepburn in the big white glasses that framed her elfin face. Iconic style makers - Givenchy, Dior and Vidal Sassoon. Think cult films of the fifties & sixties, The Ipcress File, Harry Palmer, Charade and Two for the Road. They all got one thing in common. Oliver Goldsmith. In the second half of last century, when it came to eyewear, OG was synonymous with stars and style.