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Specimen / smelting / lead ore / separation / silver / German me

One of a group of specimens illustrating the dressing and smelting of ores, German method - smelting of lead ore and separation of silver - silver refining - sample of silver of standard purity

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Advanced search Search terms must be longer than two characters. Use a * as a wildcard to widen your search (for example, bagpipe* will find bagpipe, bagpipes and bagpiper).