Vintage IBM Mark Sensing Pencil Leads – Electrographic.
Original IBM electrographic mark sensing pencil lead box containing over 40 unused leads. These specialized conductive graphite leads were designed for IBM mark-sense forms and early data processing systems used during the punch-card era.
A unique piece of computing history and an excellent collectible for IBM enthusiasts, vintage technology collectors, office equipment collectors, or anyone interested in the history of early computing.
Features:
• Original IBM packaging
• Mark Sensing Pencil Leads
• Electrographic conductive graphite leads
• Over 40 full leads included
• Vintage IBM data processing accessory
• Early computing and punch-card era collectible
Condition:
Vintage pre-owned condition. Box shows age-related wear including edge wear, corner wear, scuffs, discoloration, and storage wear consistent with age. Over 40 original leads remain and appear unused. Please review all photos carefully for complete condition details.
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