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Koh-I-Noor Professional 5613

Koh-I-Noor Rapidograph Inc., Bloomsbury, New Jersey

lead diameter mechanism composition variations production date origin	2 mm pushbutton spring clutch plastic barrel, metal clutch and pushbutton pushbutton: black, blue, brown, green, red, silver 1970s Italy
see also	Koh-I-Noor 5612

 

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Koh-I-Noor “Streamline” 5613

Koh-I-Noor Rapidograph Inc., Bloomsbury, New Jersey

lead diameter mechanism composition variations production date origin	2 mm pushbutton spring clutch plastic barrel and pushbutton, metal grip, clutch, and lead tube bushbutton: black, blue, brown, green, red, white circa 1976 to 1992 Italy
see also	Koh-I-Noor Rapidograph catalog, 1980, p 30 Koh-I-Noor Rapidograph catalog, 1985, p B-2 Koh-I-Noor K20 and K33 drafting leadholders Dietzgen 3159 drafting leadholder