Hello Detlef, As usual Jose has done his magic and brought this back from the neglect it had been subject to and given it a new life as the beautiful weapon that it was originally meant to be. The only reason that I can think of for the woven silver band to have been left behind is that the original ferrule possibly was made from swassa and the band just did not have enough value to be bothered with at the time.
A beautiful piece, my congratulations to both the owner and restorer.
Best,
Robert