prov:value
| - 'The appraisers, or the collector and naval officer, as the case may be, may call before them and examine upon oath any owner, importer, consignee, or other person, touching any matter or thing which they may deem material in ascertaining the true market value or wholesale price of any merchandise imported, and require the production on oath to the collector, or to any permanent appraiser, of any
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