A bone ivory Diptych string gnomon dial, the cover with revolving brass solar/lunar volvelle with moon face, calibrated with calendar scales, the inner face with sun motif, hour scale in Roman numerals, the horizontal plate with compass box, blued needle with cap, the dial engraved with cardinal points and B with fleur-de-lys mark, with hour scale, later inscription Commt die Grunde, fruitwood segment with underside ivory plate inscribed Nurnberg - 2 1/8in.wide

Details
A bone ivory Diptych string gnomon dial, the cover with revolving brass solar/lunar volvelle with moon face, calibrated with calendar scales, the inner face with sun motif, hour scale in Roman numerals, the horizontal plate with compass box, blued needle with cap, the dial engraved with cardinal points and B with fleur-de-lys mark, with hour scale, later inscription Commt die Grunde, fruitwood segment with underside ivory plate inscribed Nurnberg - 2 1/8in.wide

Lot Essay

This dial may have been made by Leonhart Millar fl.1594-1653, who employed several of the motif's found on the dial such as the fleur-de-lys

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