A George Wilson mahogany Nocturnal with a central brass sighting hole, rotating volvelle and hand-carved scale; image credit on full record.
The George Wilson maker's mark; image credit on full record.
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Nocturnal; Wilson (George), Mahogany, Brass Sighting Hole, Rotating Arm & Scale, 8 inch.
A George Wilson mahogany Nocturnal, late 18th or early 19th century, with a central brass sighting hole, rotating volvelle [wheel chart or a type of s... [more detail available via subscription]