Talk:House of Poitiers-Valentinois
The counts of Valentinois always used the six bezants design from the very first known seal :
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(from Roman, Joseph - Description des sceaux des familles seigneuriales de Dauphiné)
There are however a few variants : A couple of seals show ten bezants which could also be interpreted as a semis of bezants instead of six :
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The lords of Saint-Vallier used either the same arms or a variant featuring a lion in chief :
File:Amédée de Poitiers - 1286.png
The lords of Chalançon used a bend as brisure (I'd say argent for the tincture but there's no way to be sure).