A bone diptych dial, the lid with revolving volvelle, string gnomon missing, with compass box, the base with perpetual calendar, - 2¾in wide | Christie's

拍品 165

165

A bone diptych dial, the lid with revolving volvelle, string gnomon missing, with compass box, the base with perpetual calendar, - 2¾in wide

細節

A bone diptych dial, the lid with revolving volvelle, string gnomon missing, with compass box, the base with perpetual calendar, - 2¾in wide