A catalogue of a collection of Grecian and Roman medals, in gold, silver and copper; of a person of distinction, deceas'd [electronic resource] : Which (by order of the executors) will be sold by auction, By Mr. Langford and Son, at their house in the Great Piazza, Covent Garden, on Friday the 22d of this instant June 1770. The said collection may be viewed on Wednesday the 20th, and till the time of sale, which will begin punctually at twelve o'clock. Catalogues of which may be had gratis on the days of viewing, at Mr. Langford's aforesaid.