A catalogue of the genuine and valuable collection of coins and medals, of that ingenious and well-known Collector Mr. Nathaniel Samm, of Bartholomew Close, lately deceas'd [electronic resource] : Which (by order of the administratrix) will be sold by auction, by Mr. Langford and son, at their House in the Great Piazza, Covent Garden, on Wednesday the 3d, and Thursday the 4th of this instant August 1768. The same may be viewed on Monday the first of August, and every day after from ten till four, and the sale will begin each day punctually at twelve o'clock. Catalogues may be had gratis on the days of viewing, at Mr. Langford's aforesaid.