So I contacted LodenFrey in Munich.Borsalino used this type of label from the early eighties onwards to this day. Their liners haven't changed much in this period as well. Pretty certain this is rabbit felt because the hat would say so if it was beaver or nutria. Their financial troubles, or rather the financial troubles of their owner, didn't affect the quality of their hats. So there wouldn't be a difference other than price between a hat that was produced before and one that was produced after that financial jiggery pokery.
They closed down their Men's Hat department in 2017 ( same year as Borsalino bankrupcy).
So, confirmed (at least) that the hat is pre- bankrupcy.
To Me......Next to my 1 Hornskov....This hat is my 2. favorite, it Rocks !