Four blue lens octagonal spectacles 1830
Four blue lens octagonal spectacles 1830Four blue lens octagonal spectacles 18308Four blue lens octagonal spectacles 1830Four blue lens octagonal spectacles 1830Four blue lens octagonal spectacles 1830Four blue lens octagonal spectacles 1830Four blue lens octagonal spectacles 1830Four blue lens octagonal spectacles 1830

Octagonal four blue lenses spectacles – 1830

$349.00

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Octagonal four blue lenses spectacles – 1830

Octagonal four blue lenses spectacles, according to Rosenthal in “Spectacles and other Vision Aids” p. 271, “In 1854, Robert Hunt of England found that sunlight passed through a plano blue lens and then, when focused on a compass needle, could magnetize the needle. No other colored lens accomplished this. Therefore, the blue lens became immensely popular in the 1800s . It was believed to have some mysterious power.”
This pair has plano (no power) blue glass lenses that fold in and out of one’s vision.