Help to identify coin weight 2

[jsalgado]

brass ; 20 x 20 mm; Many thanks for your help.
salgado

[Guillaume Hermann]

Hello,

This French weight was for the 4 doppia of Firenze, Italy.
XX D XVI = 20 deniers 16 grains = the weight of the coin
IB = mintmark of the "maître balancier juré" Jacques Blanc (in Lyon), 1668-1685
Here is a little interesting biography of Jacques Blanc you can transate with Ggle https://detectionloisir.forumactif.com/t1397-poids-pour-le-quadruple-doppia-de-florence

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[jsalgado]

Guillaume Hermann
Perfect! Many thanks for the identification and the little interesting biography of Jacques Blanc.
Many thanks!
salgado

[Guillaume Hermann]

My pleasure!