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7 Spotting Scopes or Monocular Telescopes...
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Admiral Togo-Glas by Carl Zeiss Jena "Marine-...
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Monocular Opera Glass, c. 1880...
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Chevallier Spy Glass and 2 further Opera Glas...
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2 Brass Spy Glasses...
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4 Monocular Opera Glasses...
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4 Monocular Opera Glasses...
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A Rare and Fine Monocular Telescope, c. 1830...
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Rare Venetian Single-Draw Telescope, c. 1750...
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3 Opera Spy Glasses...
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2 Attractive Opera Glasses...
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4 Monocular Opera Glasses...
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2 Gold-Plated French Spy Glasses...
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4 Opera Glasses...
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2 Interesting Spy Glasses, 19th Century...
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3 Simple Microscopes...
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Withering-Type Botanical Microscope, c. 1800...
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3 Pocket Microscopes...
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Brass Microscope by Schmidt & Haensch, c. 188...
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3 English Microscopes...
