A rare set of 18th-Century ivory Napier's bones,
A rare set of 18th-Century ivory Napier's bones,

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A rare set of 18th-Century ivory Napier's bones,
unsigned, with ten ivory multiplier rods in a boxwood tabulat with single fixed ivory multiplier rod and engraved supporting rod, contained in the original fruitwood case with sliding cover, with incised stylised Maltese Cross decoration on the front and back -- 4in. (10.2cm.) wide

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