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Again the scales may be horn which is prone to warping & was the standard scale material on those razors.
If you're a tinkerer & they are horn you could attempt to reshape them. Fixing warped horn...

Tsunami : How do you know the scales are ebony? They could be horn which would make the time frame more accurate..
Wet a piece of sandpaper & sand a spot on the inside of the scales. If you get...