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	Courtesy Russell Erwin colection

Black Chalk Points No. 111

L&C Hardtmuth, Vienna

lead type lead size available degrees package quantity package composition production date origin	colored “black chalk” ~3 mm 2, 3, 4 6 paperboard circa 1880 Austria
see also	L&C Hardtmuth Everpointed Artitst’s Black Chalk Pencil F. Weber Catalog & Co. catalog, c1890s, p 116


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L&C Hardtmuth 2601 Black Chalk Refills

L&C Hardtmuth, Czechoslovakia

lead type lead size available degrees/colors package quantity package composition production date origin	black chalk (carbon) 3 mm 5: 1, 2, 3, 4, 5 6 paper box (1920s-1930s) Germany
see also	L&C Hardtmuth 39B 3 mm sketching leadholder Koh-I-Noor Materials Catalog, 1937, p 5 Koh-I-Noor Rapidograph, Inc. catalog, 1980, p 74

The number 2601 leads were later known as "Black Carbon Leads," as shown in the 1937 Koh-I-Noor Materials Catalog.


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