LONDON, 1672, MAKER'S MARK I.R, MULLET ABOVE AND BELOW, PROBABLY FOR JOHN RUSLEN

Dr David Mitchell in Silversmiths in Elizabethan and Stuart London Their Marks and Their Lives, Woodbridge, 2017, pp. 390-393. attributes the maker's mark to John Ruslen, the son of Thomas Ruslen, a Clothworker in London, who became free of the Goldsmiths' Company by service in 1664. He became Prime Warden in 1712 and seems to have retired to Farnham, Surrey. His will was proved on 20 November 1717.