French manufacture, 18th century, the top of the octagonal case marked Butterfield - Paris, the collapsing gnomon has graduated marks from 40-60 degrees on one side and an applied silver bird on both sides; the top plate is heavily engraved with marks enabling the user to determine the time; the underside pairs numerous European cities with a range of numbers that likely represent their latitudes; the top also has a small compass to the front.

From a Significant Boston Silver Collector

Included with the sundial/compass is a late 19th or early 20th century one-page descendant's manuscript recounting the military career of French artillerist Louis de Tousard. The sundial likely belonged to Tousard, who lost an arm while serving the United States during the American Revolution. Returning to America in 1795, Tousard accepted a temporary American commission as an artillery officer and became instrumental in modernizing our nation's defense.

Some attractive toning to the silver; the compass needle appears to be fixed in place. Intact and being in overall very good condition.