THE ATHENIAN MERCURY, London, July 19, 1692  Among the two advertisements on the back page is a quite lengthy & descriptive ad beginning: "At Mr. John Marshall's, at the sign of the Archimedes and Spectacles in Ludgate Street, London, and Mr. John Cock in Long-Acre, at the Sign of the Telescope... all manner of Prospective Glasses made and sold..." with much more.
In the world of eye glasses, John Marshall was an early pioneer, having devised a method of grinding batches of identical, good quality, lenses of a specified focal length. For this he received a commendation by the Royal Society. He was also the optician to the King & Queen.
Complete as a single-sheet newspaper, 7 by 12 inches, foxing throughout, otherwise in condition.