This is the most recent addition of a large block that I have not yet discussed. I am hoping to catch up on delayed commentary soon
Latin 3780, from the Biblioteca Apostolica Vaticana, is a late 15th C book made in Lyon, Use of Rome. We know it was made for one of the Italian merchants based in that city. It was made either in 1478 or 1479, based on a Golden Number table on f.14v which starts with the indications for 1479.
The calendar is very sparse, with 115 entries in total. There are very few distinctive entries, though St Livinus, bishop 288, on November 12 is uncommon. There are several unusual orthographies, Aghate for Agathe, and Ad cathedra petri for the more common Cathedra sci petri. Apart from a few instances of miscounting, there appear to be almost no errors, and no instances of a saint being bumped by a higher-ranked feast.
(DB Id: 276)