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Spyglass
From the collection of Cleveland Museum of Art. Free to download, adapt and use — no permission needed.
Credit lineSpyglass, c. 1750–60. James Cox (British). Gold-mounted agate, periscope mirror for side viewing; overall: 5.1 x 3.8 cm (2 x 1 1/2 in.). The Cleveland Museum of Art, Gift of Howard F. Stirn, 2009.24