The First Mechanical Pencil: Patented December 20th, 1822 : r/mechanicalpencils
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History of Mechanical Pencils – Invention and Inventor
Amazon.com : 8 Pieces Back to School Mechanical Pencil 0.7 mm Metal Retractable Automatic Drafting Pencils Refills for Writing Drawing Signature Home School Office Supplies First Day of School Gift, Blue, Black :
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Sampson Mordan engine-turned mechanical pencil with push button and bale (1) - .925 silver - Sampson Mordan - England - First half 20th century - Catawiki
MAGNO Ti: World's First Magnetically Powered Titanium Pencil by HRIBARCAIN — Kickstarter