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purpose lead diameter mechanism composition variations production date origin |
color drawing 2 mm clutch extruded and machined plastic barrel, plastic grip, metal fittings none (1940s–1950s) USA |
Colorbrite 3110 instruction sheet. |
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| special features | transparent barrel | ||
| see also |
Eberhard Faber Colorbrite No. 3100 leads Eberhard Faber Microtomic 610 leadholder Eberhard Faber ad from April 1954 Architectural Record Defiance Sales Corp. catalog, 1955, p 253 |
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purpose lead diameter mechanism composition variations production date origin |
marking ~4 mm twist lock clutch painted brass barrel, brass mechanism colored barrel and lead: black, blue, red, yellow, ? (1930s to 1950s) USA |
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| imprint reads: “Eberhard Faber 1560—Pony Clip” | courtesy Allan Macdonald collection |
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purpose lead diameter mechanism composition variations production date origin |
general use apprx. 2 mm twist head lock clutch metal barrel with wooden core unknown, probably barrel color circa 1908 USA |
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| special features | eraser | ||

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