A Jacques Senecal ivory magnetic azimuth sundial, French, circa 1660,
A silvered brass armorial horizontal sundial, French or English, late 18th century,
A John Ismay clockmaker's brass quadrant, English, early 18th century,
An unusual Samuel Watson brass or bronze double sundial, English, dated 1688,
A brass universal equinoctial ring dial, English, 18th century,
An early 20th century Continental orrery with spring detent escapement
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