I'll be happy to answer any question: feel free to ask.
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This is a nice antique tortoise shell card case.
Napoleon III period.
Dimensions: 10,5 x 7,5 cm
Thickness: 1,2 cm
Period: 1850 - 1870
A few natural and discrete signs of age to the tortoise shell on the side, signs of age inside.
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Here is a converter inches / cm to help you with the dimensions: