Hi all,
I finally found all four of the Filarmonica decorated scales!
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Now I only lack of the "Sevillana" scales.

Looking at them, I noticed that the blade pin is often different from the typical Filarmonica one. Maybe those scales were selled in after-market by the seller, who installed them for the customer.

I own a couple of "Le Grelot" with nearly identical scales
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as you can see, the decoration is identical, but the shape of the handle is slightly different.

What do you know of those scales? Any information will be very appreciated!