A good match, perhaps from the Zürich area...

[Koen G]

I'm delighted that this manuscript is proving useful. In my cursory review of the Swiss archives, I have generally found that early 15th-century manuscripts with origins in either Zurich or Basel can yield pretty good matches, though the quality of the match varies. The distinctively angular Ls and Bs seem like a consistent tradition, and some of the other quirks, like the "cz" ligature, pop up pretty frequently. For example, see the fifth line here: You are not allowed to view links. Register or Login to view.

When quickly scanning manuscripts, the loops are a good visual confirmation that you're probably looking at the right type of script. But like you say, there is a lot of difference within those. To be honest, Switzerland was a pretty poor scoring area in our list, which now has one outlier. For reference, the MS you just posted scores 0.47 in our system. Things get decent once over 0.60, and good over 0.65. The other MS you posted got 0.69 (double checked by Marco), which is rare.

After my VMD presentation in a couple of weeks, I will be able to say more about this, and also open up our spreadsheet for collaborative efforts.