[DIDEROT (Denis)]. The Natural Son, or The Trials of Virtue. A comedy in five acts, in prose, with the true story behind the play. Amsterdam, 1757. In-8°, calfskin, triple gilt fillet framing the covers, decorated ribbed spine (contemporary binding). 299 pp. FIRST EDITION of Diderot’s first play. Minor damage to the verse on the front cover. Tchemerzine, IV, 447.