Hi Andy and Fernando, I still feel these are among the underestimated items you can find on today's market, and few fakes so far because its not financialy rewarding. They are also a good learning base to start with and Fernando has some captivating varieties that you don't see often.
Bellow is a nice link with aditional information.
There is a nice book on these by Vicente Toledo Momparler.
kind regards
Ulfberth
https://vicentetoledo.es/es/espadas/espadas-hasta-1800