This photo shows three different copying pencil brands produced by L&C Hardmuth Koh-I-Noor Company all produces in the 1930s or 1940s. They are full 12 count sets complete with detail paper instructions on use and different technical characteristics provided within each box.

Two of these are from the Krakow, Poland factory and were purchsed from old stock recently recovered from a distributors wharehouse in Eastern Europe. These include the famous Mephisto Brand and the Eureka brand.

The top box of Scala brand pencils were actually produced in the US factory. They have a very interesting finishing effect that makes the surface of the pencil resemble a stalk of bamboo. This is accomplished by creating a continuous stop at fixed intervals while lacquering ping effect during the lac

For more about these three Koh-I-Noor copying pencil sets snd the history of Koh-I-Noor Pencil Company you can read my Timberlines Blog post entitled L&C Hardmuth - Koh-I-Noor: A Diamond in the Rough

Copying pencils, also called ink pencils produce an indelible ink mark when wetted. For more information about Copying Pencils read this Article on the History and Use of these interesting pencils