Originally Posted by Madnumforce
... I find this tang to be a bit suspicious. The patina doesn't seem to be right at all, like if it was just a few years old. Can you confirm?...
Well Geoffroy, the only thing i find suspicious is the quality of the picture i took, rather 'astonishing'; besides a bit of a cleaning, due to some local top rust. But i would not doubt the sketch shown in post #1, drawn by the Nany Museum technical consultant, where this fixation method is shown as a system.
I will upload here pictures of two examples shown in the same publication, belonging to private collectors, added by a couple citations written by the said expert. I don't expect you read portuguese, but i trust that you trust the quoted evidence