Well, of course not. However, Burgundy was a wealthy state in the 1400's and the court, particularly under Philip the Good, son of John the Fearless, was extravagant. One would expect that the dukes would be depicted in the latest fashion. Philip the Good was depicted in a black Burgundian-style chaperon, while the earlier representation of his father shows a different type of hat. Styles change. Perhaps that is what was happening here. So, the question is, how early can the wide-brimmed, Burgundian-style of chaperon be shown to exist, not whether everyone wore them.

For the 'hat' database. Men's hats in the Book of the Queen, Paris, 1410-1414. Lots of variety.
BL Harley 4431
Search tag: hats in Pizan

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Here is a hat with a really long tail. Text is From France 1440.

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@R.Sale
I had a quick look at the book description.
The similarity is interesting.

Origin of the manuscript: The French manuscript was possibly copied and illuminated during the lifetime of King Charles VII († 1461), who is depicted in the painting on f. 6v (Note: With its long nose and round hat, it resembles the famous portrait by Jean Fouquet, which is kept in the Louvre.

I’ve found a few examples of hats similar to the vms Sagittarius’ in french manuscripts around 1415-1435:


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Those look good. Also for example in the second link you see pretty good parallels for the overall dress style.

I hadn’t noticed before but two of the manuscripts I linked (the second and the third) have the same artist(s): the “Bedford Master and his workshop”.

So, the provenance corresponds with the two cosmic diagrams (BNF Fr. 565 and Harley 334), all produced 1400-1450 and from Paris.

The "hat" itself can be seen in various illustrations, but the "tail", when it can be seen, is often shoulder-length, or not much longer. By comparison with which, the tail on the hat of VMs Sagittarius seems a bit longer. The tail on the hat in the Cod. Bodmer image (Post #23) is the longest tail I've seen. It shows that the VMs illustration is not an exaggeration. And at the same time, it provides a fairly definitive perspective on historical fashion.

And this handsome guard can be the Sagittarius?
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