A SILVER BUTTERFIELD DIAL
BION, 18TH CENTURY
A SILVER BUTTERFIELD DIAL BION, 18TH CENTURY four scale hours for 40°, 45°, 50°, 55°, the outer 4-12-8 the inner V-XII-VII, divided to the half hour, signed N BION A PARIS , foliage motif, the engraving with niello infill, folding bird pointer gnomon, 8-point compass rose, the reverse with latitudes for 30 cities, in felt-lined fishskin case 2¾in. (7cm.)
A SILVER BUTTERFIELD DIAL
BION, 18TH CENTURY
A SILVER BUTTERFIELD DIAL BION, 18TH CENTURY four scale hours for 40°, 45°, 50°, 55°, the outer 4-12-8 the inner V-XII-VII, divided to the half hour, signed N BION A PARIS , foliage motif, the engraving with niello infill, folding bird pointer gnomon, 8-point compass rose, the reverse with latitudes for 30 cities, in felt-lined fishskin case 2¾in. (7cm.)
.jpg?w=400?width=1600&quality=70 "Source: Christie's")
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.jpg "Source: Christie's")
.jpg "Source: Christie's")
