39 leaves, wanting  a quire at front and a leaf from beginning of first quire (with Book I, chs.1-40), and a leaf from end (with conclusion of variant king lists),
Collation: i9 (of 10, wanting first leaf), ii-iv10, horizontal catchwords, written space 120mm. by 75mm., single column, 26 lines in a rounded pre-humanistic literary hand, capitals partly stroked in red, rubrics in red, paragraph arks in alternate red or blue, numerous small initials in red or blue with contrasting penwork, numerous small marginal notes showing continued use into fifteenth century (but overall margins clean), spaces left for a number of rubrics at end of volume and minor discolouration to first and last leaf from long being outside of a binding, small erasure of one or two words from end of last line on first leaf, rubric on fol.24v which should open book III mistakenly announcing “incipit secundus. Disbound, but with original binding structures present: three double thongs and remnants of headbands. Dimensions: 178mm. by 123mm
The author & his magnum opus

Honorius of Autun flourished in the last years of the eleventh century and the first four decades of the twelfth, and was most probably a German Benedictine, who spent time in England at Canterbury and perhaps also Worcester, before returning to southern Germany. He spent his most active years as an author in Regensburg, probably in the monastery of St. Emmeram or Weih St. Peter’s.
His magnum opus, written in the period 1110 to 1139, was universally popular in the Middle Ages, serving as an easily accessible collection of knowledge on the cosmos. It dealt with the creation and shape of the world (book I), Time and its calculation (book II) and the six world ages up to Holy Roman Empire (book III).
Text: (book I, with chapters in the present manuscript on volcanic activity causing fissures in the ground [fol.1r]; the animals which live in water [fol. 2v], including the “corcodrilli et ypotami” here; the winds [fol. 3r]; the planets [fol. 4v], the moon, stars and heavens), the measurement of secular and religious time (book II, with chapters in the present manuscript on the indivisible or ‘atomic’ [fol. 11r]; minutes and hours [fol.11r]; the signs of the zodiac [fol. 11v] and meridians; the names of the days of the week and their etymology [fol. 13r]; and the names of the months in Hebrew and Egyptian [fol.14r]; the Roman months [fol.14v]; and the methods to calculate major Christian holidays), and the progression of man through the six ages of the world, ending with the Holy Roman Empire (book III, with chapters in the present manuscript on Old Testament chronology [fol. 24v]; Assyrian kings [fol. 28v]; Roman kings [fol. 29v]; Babylonian kings [fol. 29v]; Syrian kings [fol. 30v]; Roman consuls and dictators [fol. 31r]; Gothic rulers such as Theoderic [fol.36v], noting Boethius in passing, and later rulers of the Franks; and finally Holy Roman Emperors from Pepin [fol.36r] through Charlemagne to Lothair of Supplinburg, enthroned in 1133).
The text exists in several versions, many evidently prepared by the author himself (see Wilmans, MGH SS., 10, 1852, and Flint, 1982, pp. 35-41), and the inclusion of Lothair as the last Holy Roman Emperor in the present manuscript (fol. 36v) identifies the text here as that produced c. 1133 (and also represented in Paris, BnF. Lat. 6560 and Arsenal ms 93; London, British Library, Harley MS 4348 and Arundel MS 270; Salzburg, St. Peter’s, Hs A.IX.i; Vienna, ÖNB, Hss 427, 539 and 818; Zwettl Hs 172; Hess. Landesb. Fulda B3; Munich, Bayerische Staatsbibl. Clm. 7974; Brussels, Bibl. Royale mss 10862-5; and Admont, Hs 400).
Honorius of Autun, Imago Mundi, fol. 1r: opening “…minores [sic, for ‘mitior est’] ob longinquitatem eius” (the end of book I, ch.40, corresponding to edition of Flint p. 68), with book I concluding on fol.10v with an amalgam of chs. 146-147 (ending, “… cum terra creatum hic longe supereminet”);
Honorius of Autun, Imago Mundi, fol. 10v opens, “Priori libello globum totius mundi oculis …” (book II, ch. 1, Flint p. 92-123), ending with ch. 120 on fol.22v (ch. 120: “…mortis perducere affirmantur”);
Extracts from the so-called Computus Ecclesiasticus (also recorded in Mainz, Stadtbibliothek, Hs I 286, fol. 19r and Nuremberg, Germanisches Nationalmuseum, Hs 7063, fol. 2r: see G. List, Der Handschriften der Stadtbibliothek Mainz, 2006, p. 93), opening “Annus solaris ut maiorum
prudentia comprobatum est ccc lxv diebus et vi horis constat…” and ending “… est xii kl. iulii”; and Hrabanus Maurus, De Universo Libri XXII, book 9, ch. 2, opening “Athomos philosophi vocant quasdam in mundo corporum partes tam minutas [sic]…” but ending with a series of variant quotes to prove the point, the last here “… media nocte factus est mundus et in media nocte iterum destruetur”; and the same author’s De Computo, ch.7:1 (De Graecorum notis ad numeros aptatis), opening “Libra vel as sive assis, XII unciae …” and ending “… scripulus vi siliquae”); followed by a substantial quote from Macrobius’ commentary on Cicero’s Somnium Scipionis, I:24-31, opening “Ex omni innumera varietate numerorum pauci …” and ending “… musici vocaverunt”. This is followed by a short sentence from an unidentified text on geometry.

Honorius of Autun, Imago Mundi, fol. 24v opens, “Non arbitror infructuosum seriem temporum …” (book III, the final book of the text containing the laying out of the progression of man through the six ages of the world, through the enumeration of king lists from the ancient and medieval world, Flint pp. 123-151), ending on fol. 37v (“… regem dignata est sublimare”, with these last sections in a variant order, the traditional ending naming Emperor Lothair on fol. 36v, “… lotharius rex annis xii. et mensibus iii. et xii diebus gradus rex”).
Peter of Poitiers, Genealogia historiarum (extracts from the text for the second generation of man), fol. 37v opening “Presens secundum distinguitur in duos status …”, and ending mid-word at the end of fol.39v, “… asalinanasar rege assi”; the catchword adding “…riorum captive”.

The Latin text survives in institutes in Europe in over hundred manuscripts and fragments. Forty-two are listed by Flint (1982, pp. 19-20) in her important work. Seymour de Ricci in his “Census of Medieval and Renaissance manuscripts in the United States and Canada” list none and also no other copy in the US or Canada is listed in the supplement to his work. There is a single leaf in Yale and discussed by R.G. Babcock, Reconstructing a Medieval Library. Fragments from Lambach, 1993, p. 102, no. 20, fig. 16.
On the open market, only three copies where offered the last 150 years! The Schoenberg database lists only three, all part of much larger compendia: (i) an English manuscript of the mid-fourteenth century was sold by Sotheby’s in 1936 from the collection of Major Q.E. Gurney (now Cambridge University Library); (ii) another English copy dated 1349, was acquired by Martin Schoyen in Christie’s in 1986 (later deaccessioned and offered for sale by Sam Fogg and then Sandra Hindman, catalogue 16, 20 Now, no. 9); and (iii) an Italian copy dated 1409 was acquired by Lawrence Schoenberg in 1997 from J. Günther (see Transformation of Knowledge, Early manuscripts from the collection of Lawrence J. Schoenberg, 2006, no. 267; now deposited in Penn. State).
Editions and mss surveys

R.Wilmans, MonumentaGermaniae Historica SS., 10, 1852
Migne, Patrologia Latina, 172, coll. 115-188

V. I. J. Flint, ‘Honorius Augustodunensis Imago mundi’, Archives d'histoire doctrinale et littéraire du Moyen Âge, 49, 1982, pp. 48-151

Secondary literature
J. A. Endres, Honorius Augustodunensis, 1906
C. Daux, ‘Un scholastique du xiie siècle trop oublié: Honoré d'Autun’, Revue des sciences ecclésiastiques, 1, 1907, pp. 737-758, 848-858, 974-1002, 1071-1080
R. Bauerreiss, ‘Zur Herkunft des Honorius Augustodunensis’, Studien und Mitteilungen zur Geschichte des Benediktinerordens, 53, 1935, pp. 28-36
E. Roth, ‘Kleine Beiträge zur Kenntnis des sogenannten Honorius Augustodunensis’, Studia Neophilologica (Uppsala), 12, 1939, pp. 120-135
E. Matthews Sanford, ‘Honorius, Presbyter and Scholasticus’, Speculum 23, 1948, pp. 397-425
R. Bauerreiss, ‘Honorius von Canterbury (Augustodunensis) und Kuno I. der Raitenbucher, Bischof von Regensburg (1126-1136)’, Studien und Mitteilungen zur Geschichte des Benediktinerordens, 67, 1956, pp. 306-313
H. Schipperges, ‘Honorius und die Naturkunde des 12. Jahrhunderts’, Sudhoffs Archiv für Geschichte der Medizin und der Naturwissenschaften, 42, 1958, pp. 71-82
H. Menhardt, ‘Der Nachlass des Honorius Augustodunensis’, Zeitschrift für deutsches Altertum, 89, 1958-1959, pp. 23-69
R. E. Reynolds, ‘Further Evidence for the Irish Origins of Honorius Augustodunensis’, Vivarium, 7, 1969, pp. 1-8
V. Flint, ‘The Career of Honorius Augustodunensis’, Revue bénédictine, 82, 1972, pp. 63-86
V. Flint, ‘The Chronology of the Works’, Revue bénédictine, 82, 1972, pp. 215-241
M.-O. Garrigues, Honorius Augustodunensis. Essai de bibliographie générale, Montréal 1972
M.-O. Garrigues, ‘À qui faut-il attribuer le 'De vita vere apostolica'?’, Le Moyen Âge. Revue d'histoire et de philologie, 79, 1973, pp. 421-447
M.-O. Garrigues, ‘Qui était Honorius Augustodunensis’, Angelicum, 50, 1973, pp. 25-30
P. Delhaye, ‘Quelques notes sur la morale d’Honorius Augustodunensis’, in Mélanges offerts a Pierre Andrieu-Guitrancourt, in L’année canonique, 17, 1973, pp. 279-301
R. D. Crouse, ‘Honorius Augustodunensis: Disciple of Anselm?’, in: Analecta Anselmiana. Untersuchungen über Person und Werk Anselms von Canterbury, 1975, pp. 131-139
M.-O. Garrigues, ‘Quelques recherches sur l'oeuvre ď Honorius Augustodunensis’, Revue d'histoire ecclésiastique, 70/2, 1975, pp. 388-425
V. I. J. Flint, ‘The Place and Purpose of the Works of Honorius Augustodunensis’, Revue bénédictine, 87, 1977, pp. 97-127
M.-O. Garrigues, ‘Honorius était-il bénédictin?’, Studia monastica, 19, 1977, pp. 27-46
V. I. J. Flint, ‘Heinricus of Augsburg and Honorius Augustodunensis: Are they the Same Person?’, Revue bénédictine, 92, 1982, p. 148
V. I. J. Flint, ‘Honorius Augustodunensis Imago mundi’, Archives d'histoire doctrinale et littéraire du Moyen Âge, 49, 1982, pp. 48-151
L. Sturlese, ‘Zwischen Anselm und Johannes Scotus Eriugena: der seltsame Fall des Honorius, des Mönchs von Regensburg’, in Historia philosophiae medii aevi. Studien zur Geschichte der Philosophie des Mittelalters. Festschrift für Kurt Flasch zu seinem 60. Geburtstag, 1991, pp. 927-951
V. I. J. Flint, ‘Honorius Augustodunensis’, in Authors of the Middle Ages. Historical and Religious Writers of the Latin West, ed. P. J. Geary, II, 1995, pp. 89-183
J.-Y. Tilliette, in Encyclopedia of the Middle Ages, 1 (2000) 688-689
P. Michel, ‘‘Ignorantia exsilium hominis’. Zu einem enzyklopädischen Traktat des Honorius Augustodunensis’, in Strenarum lanx. Beiträge zur Philologie und Geschichte des Mittelalters und der Frühen Neuzeit. Festgabe für Peter Stotz zum 40-jährigen Jubiläum des Mittellateinischen Seminars der Universität Zürich, 2003, pp. 117-143
V. I. J. Flint, ‘World history in the Early Twelfth Century: The Imago mundi of Honorius Augustodunensis’, in The Writing of History in the Middle Ages. Essays presented to Richard William Southern, eds. R.H.C. Davis and J.M. Wallace-Hadrill, 1981, pp. 211-238
V. Flint, ‘The Liber Hermetis Mercurii Triplicis de VI rerum principiis and the Imago Mundi of Honorius Augustodunensis’, Scriptorium, 35, 1981, pp. 284-287
M. W. Twomey, ‘Honorius Augustodunensis’, in Trade, Travel, and Exploration in the Middle Ages. An Encyclopedia, 2000, pp. 259-261
E. Matthews Sanford, ‘Honorius, Presbyter and Scholasticus’, Speculum, 23, 1948, pp. 397-425
Honorius Augustodunensis (of Autun), Imago Mundi, with extracts from the computistical works of the great Carolingian scholar, Hrabanus Maurus, and the Genealogia historiarum of the scholastic theologian, Peter of Poitiers, in Latin, decorated manuscript on parchment
A fine witness to one of the most important encyclopaedic texts of the Middle Ages. A twelve century geographical text of great rarity, copied in France, in the second half of the fourteenth century. Only three copies where offered on the open market the last 150 years.