11a

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Magnetic stone

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natural magnet stone, iron armor with anchor

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probably 1821 in the collection

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Deposit Institute of Physics of the University of Basel, Phys. 83/3.

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Inv. 1986.447.1

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11b

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Magnetic stone

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natural magnet stone, reinforcement missing

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probably gift of Prof. Peter Merian 1821

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Deposit Institute of Physics of the University of Basel, Phys. 83/4.

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Inv. 1986.447.2.

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