Ernest Borel or Other?

I bought a watch - kaleidoscope dial. Not marked on face as anything. Rear case has 'Base Metal Swiss' stamped on it. Movement has 'Swiss unadjusted 1 jewel 8800 EB'. The EB is inside a shape like a piece of bread with tips on the bottom and top. The dial has a crystal effect to the outer edge of the rotating disk. The face has an identical crystal effect to the outer edge so as it rotates the effect is a constant ring of sparkle around the outside of the face. The central design is the black Ernest Borel type of graphic which rotates on the top disk above the stationary face graphic, to give the kaleidoscope effect. The hands are red and the same as the Ernest Borel hands, with the flat tipped ends. My questions is: Is this likely to be an early/late Ernest Borel watch or a copy one? Regardless of it being an EB watch, what would be a reasonable value for the watch? What sort of age woudl you think it to be?