Keystone Eye Comfort & Depth Perception Series-stereoscope Viewer & 12 Cards
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Keystone Eye Comfort & Depth Perception Series-stereoscope Viewer & 12 Cards:
KEYSTONE EYE COMFORT & DEPTH PERCEPTION SERIES-STEREOSCOPE VIEWER & 12 CARDS
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This listing is for the steroscope stereoviewer, manufactured in the early 1900's. They are manufactured by the Keystone Steroptic Service.
It is called "The Keystone Eye Comfort and Depth Perception Series".
Included are the:
1. Viewer, painted green, made in the USA.
2. Instructions, 16 pages, cardstock cover
12 cards (4 of which look identical but are actually 4 different exercises)
CONDITION: Scroll FULL DESCRIPTION to see MORE PHOTOS.
- Pennsylvania residents to pay 6% sales tax which we collect and pay.
- International buyers are responsible to pay VAT or other Taxes to their countries as required.
- collects sales tax on behalf of other states. We do not see this tax as it is between and you and your state. Not all states require to collect tax. This is a newer law. If you are a dealer, you can write to to file a form to become tax exempt.
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