Sliding stud rheostat in box possibly connected with the mechanical masseur under A657379-84

Made:
1885-1910 in France
Sliding stud rheostat in box possibly connected with the

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Sliding stud rheostat in box possibly connected with the
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Sliding stud rheostat in box possibly connected with the mechanical masseur under A657379-84, Riviere material, possibly French, 1855-1910