Thanks a lot David and Ed for your precious help,
For the moment I can just post these other three pictures of the blade and engravings of the kaskara
Rust seems really recent on the blade but maybe it was cleaned too strongly few time before and not oiled,
Maybe that's why the arabic engravings are not deeply engraved...
What about the blade ? pretty long, 39,5 inches,
nothing fantastic except the ( recents ??) markings.