A silver Butterfield dial and gilt brass Blondeau Regiomontanus dial set, French, early 18th century,
the octagonal silver Butterfield dial signed Butterfield A Paris with four chapter rings in Arabic and Roman numerals, inset compas bowl with engraved rose with 16 labelled points, reverse with 25 towns and latitudes, 10 x 66 x 58 mm and a gilt brass Regiomontanus dial signed Roch Blondeau a Paris with list of months and fourteen towns and latitudes, 81 x 59 mm in original common black fishskin case,
3 1/2in x 2 3/4in x 1in (8 4/5cm x 7cm x 2 1/2cm)
Footnotes:
Provenance:
Trevor Philip & Sons Ltd., London, 2003.
Private collection.

Good overall condition.