Thank you, I am very surprised, and pleased about the possible importance of the blade. I do know that there are many “false” blades out there, I did watch a discovery channel program about it sometime ago.
How would I get in touch with some experts, I am in Spain, I would not think there to be any here. As for restauration when I pick up and old blade, and I have quite a few, I normally just clean and oil the blade and the same with the handle and sheath using the appropriate oils for all, but given the possible history of this one I feel it should only be touched by an expert.