A French 18th Century silver Butterfield dial signed on the horizontal plate Butterfield AParis calculated for latitudes 43°, 46°, 48° and 52° with spring loaded bird gnomon, the underside engraved with the names and latitudes of 28 continental cities and towns - 2 7/8in(6.7cm)long; a Porters-type compass in mahogany case - 2 1/8in(5.4cm)square; and a wood pillar dial - 3½in(8.8cm)high (3)
A French 18th Century silver Butterfield dial signed on the horizontal plate Butterfield AParis calculated for latitudes 43°, 46°, 48° and 52° with spring loaded bird gnomon, the underside engraved with the names and latitudes of 28 continental cities and towns - 2 7/8in(6.7cm)long; a Porters-type compass in mahogany case - 2 1/8in(5.4cm)square; and a wood pillar dial - 3½in(8.8cm)high (3)
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.jpg "Source: Christie's")
.jpg "Source: Christie's")
