Woytek 2022a, p. 381, 384-385: "Finally, there is an impressive set of three thick manuscript volumes in quarto format in somewhat worn 19th century half-leather bindings with gilt spines and labels stating “EKHELII [sic!] DOCTRINA MANUSCRIPT”, vols. 1, 2 and 3; the lower label of the third volume adds “ET SYLLOGE”. These volumes (nos. 120–122 in the archives: fig. 4) contain densely inscribed pages in Eckhel’s handwriting, numbered by Eckhel himself; however, as in the volumes described previously, generous margins were left (and very frequently used) by the author for additions and corrections. As we will see shortly, the manuscript is not complete. It is evident that the set of manuscript volumes nos. 120–122 in its present state is the result of the decision, taken after Eckhel’s passing, to have Doctrina-related posthumous papers in his hand bound together. Evidently, whoever was responsible for these volumes tried to bind the quires in the order corresponding to the printed work, although some blatant mistakes in the sequence are evident; heterogeneous additions were bound in at the end of volume no. 122... Manuscript volume no. 122, by contrast, is much more heterogeneous. Like volumes 120–121, it is not numbered continuously, but by section. The text preserved in no. 122 does not directly continue from manuscript no. 121: the draft for the chapter on the coinage from Iovianus to Constantine XIV (= XI) Palaeologus is missing; manuscript no. 122 starts with the chapter “Pseudomoneta” of volume 8 of the Doctrina (pp. 1–64 in Eckhel’s manuscript numbering), after which we find an essay “De tribunicia potestate” (pp. [1]–65), corresponding to chapter 10 of the “Observata generalia” at the end of the same volume. It is followed, after blank leaves, by pp. 41–177 of additions that continue the “Supplementa” section from manuscript no. 121. Manuscript no. 122 further contains proofs of pp. 273–496 of volume 8 of the Doctrina with many corrections in Eckhel’s hand; each quire is marked “Corr. 1.” by him on the last page, indicating that these were the first proofs. As indicated on the spine label, manuscript volume no. 122 is rounded off by the 1786 Sylloge I: not in manuscript form, however, but in the form of printed sheets of the final product (complete with the ten plates), albeit with a very few manuscript additions in Eckhel’s hand (unfortunately cropped by the bookbinder), supplying minor additional references to ancient authors or the secondary literature"
