[SACROBUSTO (Johannis de Sacrobosco, alias)]. Opusculum Johannis de sacro bu//sto spericum cum notabili com=//mento atque figuris textum decla//rantibus utilissimis. [To the explicit:]. Opusculum Magistri Johannis Sacro//busto spericum per venerabilem virum Ma//gistrum Wenceslaum Fabri de Budweyss Me//dicine Baccalarium bene correctum et desuper // commentatum finit foeliciter. S.l.n.d. [Leipzig, Martin Landsberg & Wenzel Faber von Budweis, 1495]. In-8° (140 x 206 mm), brown half-chagrin, decorated spine (mid-19th c. binding). New incunabula edition of the famous Sphaera mundi, first published in Ferrara (then Venice) in 1472. 58 ff.: A-B8, C6, D8, E6, F8, G6 & H8. Single-column text in Gothic script. One large figure on the spine of the title (watercolored) and 27 other woodcuts in the text, including TWO SMALL MAPPEMONDS; initials, rubrics and some underlining in red ink; printer's mark at the end of the volume. Includes, on f. H1 v°, a "Tabula climatum" for the year 1491. Soiling and wetness, notably on the title and last f., with handwritten inscriptions of the period on the same and on part of the other ff.; 5 ff. consolidated by mitering or laminating at the beginning of the volume; f. Goff, J 422; Hain, 14122-24; Schramm, VIII, p. 125; Oates, 782.