Well, nothing Really conclusive...
From the 1830's up to the last quarter of the 19th c. there's Spanish military patterns of swords and sabers which feature blades with this characteristic double-fullered ricasso. They're always officer's swords, never trooper's. As such, they're normally decorated with engravings and etchings in the ricasso. I don't know if there's other European patterns with such features, so where yours may exactly come from, is anyone's guess, but there was a certain trade of sword blades from the Toledo factory to foreign countries, that might include North Africa, a good part of which under Spanish jurisdiction by then.
That these come from a reworked European sword blade from the mid-late 19th c. is an hypothesis that holds some water. More than that, I can't say. The answer lies probably in the stamped numbers.
I’m sorry for not being able to help more.
Nice exemplars, by the way.
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