Mechanical lantern slide in a rectangular wooden frame. A paper label reads “No. 8. This Diagram illustrates the Annual Motion of the Earth round the Sun, with the Monthly lunations of the Moon.” In 1848, this retailed for $5.75.
Ref: Benjamin Pike, Jr., Pike’s Illustrated Descriptive Catalogue of Optical, Mathematical, and Philosophical Instruments (New York, 1848), vol. 2, p. 219.
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