This newly discovered 1928 description describes the "Original pigskin binding on wooden boards, richly blind-tooled":
Barbara Shailor has kindly sent me photos of a catalogue called The Effects of Time: An Exhibition of Books Before 1600 with Artwork by Insects and Rodents, Mangled by Bookbinders and Dealers, etc.", held in New York in 1987:
The final leaf visible in the photo in the catalogue above begins with the Collect "Deus a quo sancta desideria. recta consilia. ..." and the Secret "Deus qui credentes ..."
She tells me that both the exhibition catalogue and the bifolium were given to her by Leonard Hansen (1920-2003), a real estate developer in Englewood, NJ, book collector, and member of the Grolier Club. He received it (together with a few other loose leaves from the same manuscript and other leaves from other manuscripts), when he was a Rutgers University alumnus active in library affairs, from Otto Ege's daughter whom he knew. He kept all of this miscellaneous material in a big trunk in his home together with some of his other treasures (including incunabula), some of which were bequeathed to the Morgan Library.
Here is the whole bifolium spread out:
From these images we can see that the bifolium consisted of fols.154 and 159:
If the quires of the original volume were regular quaternions, they would have begun on fols.1, 9, 17, 25, 33, 41, 49, 57, 65, 73, 81, 89, 97, 105, 113, 121, 129, 137, 145, 153, 161, and 169. In such a reconstruction, the ante-penultimate quire would therefore have consisted of these four bifolia:
fols.153 & 160
fols.154 & 159
fols.155 & 158
fols.156 & 157
which is in perfect accord with what we have. This allows us to posit that the volume was originally composed of regular quires of eight leaves each.
In combination with the list of contents recorded in 1928:
I failed to mention in the previous post that leaves from this manuscript were no.2 in Ege's famous portfolio of "Fifty Original Leaves ..." (often abbreviated to FOL); it is therefore FOL2 in the Handlist (Appendix X) at the back of Scott Gwara's Otto Ege's Manuscripts, 2013, where further references are given.
Looking through the images of FOL2 leaves on the Denison website, hoping to find a leaf with a catchword that would either support or refute my hypothetical quire reconstruction, I noticed that the leaf at the Lima Public Library, originally fol.130, has an added marginal note about the feast of St Wenceslas (28 September), just before the text for the feast of St Michael (29 September):
|"Wenzezlai. In v(ir)tute / tua. viii ..." [Source]|
EDIT, 10 Jan 2016:
Perhaps the best available online images of the manuscript show the page for Easter, fol.34, recently sold by Christie's (click the "[source]" links to see much larger versions):