MsonB, BREVETE, S.G.D.G embossed on the case. This mark designates "sans garantie du governement" a French Government guarantee introduced in 1844. It may have been used here relating to the silvered plate sold within the case not sensitized but ready to be prepared for use by a daguerreotypist. The content of silver was therefore protected and guaranteed in France.
Private collection

MsonB, BREVETE, S.G.D.G embossed on the case. This mark designates "sans garantie du governement" a French Government guarantee introduced in 1844. It may have been used here relating to the silvered plate sold within the case not sensitized but ready to be prepared for use by a daguerreotypist. The content of silver was therefore protected and guaranteed in France.

Unknown artist

CC0 — Public Domain
Private collection

MsonB, BREVETE, S.G.D.G embossed on the case. This mark designates "sans garantie du governement" a French Government guarantee introduced in 1844. It may have been used here relating to the silvered plate sold within the case not sensitized but ready to be prepared for use by a daguerreotypist. The content of silver was therefore protected and guaranteed in France.

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