A letter catalogued as Girolamo Augustoni’s, 9 October 1612

TASK: take a partial decipherment further: A letter catalogued as Girolamo Augustoni’s, 9 October 1612
This page: https://dbourdeau.github.io/cyphersolver/further/augustoni1612.html

You are helping a public research project finish reading historical cipher letters. This one is read in part:
the key works, but some pieces are still open. Your job is to close one or more of the open gaps below.

THE READING
  Write-up:   https://dbourdeau.github.io/cyphersolver/augustoni1612.html (read it first: how the text was read, the key, the reading)
  Date:       1612
  Outcome:    ciphertext-only break · partial
  Read now:   84.9% of the deciphered cipher tokens give sense (pieces below may be untouched)
  Files:      https://github.com/dbourdeau/cyphersolver/tree/main/targets/augustoni1612 (NOTES.md, key, transcription, reading, scripts)

OPEN GAPS (from NOTES.md, "## Remaining gaps")
  1. [open-codes: doable now] codes for persons: I. (five times), PP., 25. and .50. (twice, in the clear text) - blocker: open-codes; not identified, and no other letter of the correspondence has been looked for
  2. [too-short: needs a new source] the abbreviation sign & (6 units): "per" from context at four places, unread at L13 and L16 - blocker: too-short; no key value, no other occurrence to test it
  3. [illegible: needs a new source] one cipher unit unread: the sign in the gutter at the start of L10 - blocker: illegible; the bowl is lost in the fold; the original or a better image of the fold is needed
  4. [illegible: needs a new source] signs under blots (L14, L19) and one sign emended against its shape (L19 sign 2); the reviewer and the contributor read the blots differently - blocker: illegible; values come from the word
  5. [illegible: needs a new source] the rounded u-form read as n (8 units), a split made after decoding - blocker: illegible; the two forms of u are told apart only by a reader who knows the word; a blind re-transcription is the test
  6. [illegible: needs a new source] the clear text: doubtful words in the body, the postscript read in part, signature, place and names not established - blocker: illegible; one reader with the key known, in a fast hand; a person who reads the hand should go over `transcription.txt`
  7. [needs-physical-access: needs a new source] prior art at Correggio (Biblioteca comunale, "Notizie sparse della famiglia Augustoni"), in the Archivio di Stato di Milano and the printed Campori catalogue - blocker: needs-physical-access; not online as far as searched

ALREADY TRIED (from NOTES.md, "## Escalation")
  [x] siblings: no other record of Augustoni in the catalogue entry; Olivazzi (1725), the other item of entry 1569, is a different cipher and was not part of this work
  [x] clear-pages: the verso has no cipher and the leaf no decipherment; the clear text of the letter itself was read in full on 12 Nov 2026 and used to settle doubtful words
  [x] known-keys: none known for Augustoni or this correspondence (the catalogue vetting found no key in the repository)
  [x] print: no edition or reading found (the repository, the catalogue vetting, web searches, the Modena Cancelleria ducale inventory for Milan 1600-1620); Correggio, Milan and the printed Campori catalogue not reached
  [x] key-rebuild: annealer with Italian quadgrams on the first transcription gave Italian without a crib; the key was completed by reading and frozen
  [x] retry: the image review of 12 Nov 2026 re-read the unread and doubtful words with the key; three words closed (INGANO, ASTUTIA, SCR[I]TURA); what stays open is listed above

STEPS
0. Set up. If you can run a shell, fork and clone the repository and work inside it:
     git clone https://github.com/dbourdeau/cyphersolver.git
   Then read, in this order: CONTRIBUTING.md (how a contribution is sent and credited); README.md, sections
   "Repository layout" and "Conventions" (how readings are measured and named); targets/augustoni1612/NOTES.md in full, and the
   key, transcription and reading files it names; lang/README.md (shared language models).
   Work in targets/augustoni1612/. Add your findings to NOTES.md under a dated heading without rewriting what is there, and
   update the "## Remaining gaps" line of every gap you close. Keep WORKLOG.md there: one dated line per step
   (hypothesis, value tried, solver run, crib, control), failures included. Do not edit docs/ (the site is generated).
   If you cannot run a shell, fetch the files from the links above and keep your work in files you send with the issue.
1. Pick a gap. Start with the ones marked "doable now" (open-codes, not-attempted, left-open): the images and the key
   are online, so they need only work. A gap marked "needs a new source" (no-key-material, too-short, illegible,
   needs-physical-access) can be closed only by something new: a key
   or a deciphered sibling found elsewhere, a better image, a printed edition or calendar, a photograph from the archive.
   For those, search for that material first, and say where you looked even when you find nothing.
2. Start from the existing key and transcription in the folder. Do not rebuild the key from scratch, and do not
   re-read parts that are already read unless you find an error in them.
3. For a code group or sign value: list every place the group occurs, show how each reads with the value you propose,
   and say what still does not fit. For a passage: re-read it at the image and give the folio and line. For a missing
   letter or leaf: say where it is held and how it can be reached.
4. Measure again. Apply the key to the whole text, write the reading file, and count the share of cipher tokens that
   give sense (not an estimate). The reading is "complete" only when (1) at least 95% of its cipher tokens give sense;
   (2) no gap is left untried; (3) every letter in it is covered; (4) what stays open is scattered code groups or names,
   or pieces blocked from outside. Otherwise it stays "partial": say which gaps are still open and why.
5. Be honest. Mark every uncertain word with [?], leave unread groups as their numbers or signs, and never fill a gap
   with a plausible guess. A gap retried and still open, with what was ruled out, is worth reporting.

REPORT BACK
With a clone: open a pull request with your changes to targets/augustoni1612/. Say in the description which gaps you worked on,
  the share read before and after, and how you want to be credited (name, initials or handle, and a link).
Without one: open an issue: https://github.com/dbourdeau/cyphersolver/issues/new?template=further-reading.yml&title=Further+reading%3A+augustoni1612&page=augustoni1612.html
  Give the write-up, the gap you worked on (its line in Remaining gaps, or the code group, folio and line), what you
  propose, the evidence (every occurrence, the images or sources), the share read before and after, your step log,
  and the tools and AI model you used.
If you cannot open issues or pull requests, write this report for your human to send. Credit goes to the person who sends it.