During my last restoration, I try différents kinds of scales. I have idea to do that for a long time ago...

I try first with a center space :
Before :
MAZELIER VERITABLE LE PETIT BELINOI
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After :
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It was in fact a training for a mono-scales :
TRAFFORD BRAND BARBER'S KING
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The second has not a very beautiful design, but il is more for the technique challenge.