Here is one of those enigmatic treasures that can be found among the later manuscripts, Biblioteca Medicea Laurenziana, Pluteo VIII.14. It is a composite manuscript that in its current shape contains the bulk of the letter of James on the first 18.5 folios, an unidentified text on the verso of folio 19, Chrysostom's sermons on Matthew from folio 21, and finally Victor of Antioch on Mark (the last two items as per Pinakes).
The text of James is laid out as a typical commentary manuscript with the main text occupying a relatively small block halfway down near the inner margin and the commentary written around it.
However, though on the last two pages the main text is laid out as normal, the commentary has not been added, and it seems that the commentary breaks off at the recto of folio 18. The final page with text of James looks like this and brakes off at James 4:15 αντι του λε-.
What strikes me though, is that this item is listed as a minuscule. Admittedly there are a number of ligatures, and the commentary is in a minuscule script, but the main text with all its individual letters looks to me rather majuscule-like. There are other examples where the text is in majuscule and the commentary is in minuscule, like X(033), or where part of the work is in minuscule and the remainder in majuscule (without either being a supplement), such as in minuscule 566 and Λ(039), which was divided up by Tischendorf.
Here is a composite image of the main text of the first four pages.
I have no intention of starting a campaign for the recategorisation of 197 as majuscule 03**, but, please, could somebody convince me that James in 197 is a true minuscule script? (As usual, thanks to the NT.VMR of the INTF for making the images available.)