Calendrier perpétuel ou Almanach journalier; avec une table chronologique de calculs faite depuis l’an mil un de Jesus-Christ, jusqu’a l’an deux mil, pour l’Ancien & le Nouveau Calendrier. Ouvrage très-utile & nécessaire aux magistrats, gens de justice, hommes de lettres, chronologistes, navigateurs, curieux & a toutes sortes de personnes.

First edition of an ingenious perpetual calendar, serviceable to the year 2000. and including a folding engraved lunar chart. The preface suggests its utility to 'l'Homme d'État, le Magistrat, l'Homme de Lettres, le Particulier même'. Duplessis was a map publisher, who also issued a variety of calendars. The advert after the preface offers geographical and historical maps and charts, a large map of France on 175 sheets but also calendar mounted on card with elaborate engraved borders which could be supplied glazed in gilt frames. 4to (240 × 175 mm), pp. 86, plus folding engraved table. Occasional minor ink marks, some spotting, slightly heavier to the engraved plates, old waterstain to lower inner corners. Slightly later (c. 1800) quarter sheep, gilt spine. [No US or UK copies in Worldcat.]