Liskeard Museum on X: "The cylindrical or 'planetary' pencil sharpener was first developed in Chicago in 1896, offering an alternative to the traditional 'prism' models that were prone to breaking pencil leads. [
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U.S. Automatic Pencil Sharpener by APSCO, c. 1911 - Made-in-Chicago Museum
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U.S. Automatic Pencil Sharpener by APSCO, c. 1911 - Made-in-Chicago Museum
Antique Pencil Sharpeners
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Vintage 1964 midget Automatic Pencil Sharpener Co. - Etsy Canada
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