2 boxes (quantity 20 pieces)
Made in England by The Cumberland Pencil CO Ltd
New OLD Stock
Copying pencils were first introduced in the 1870s for use in the letterpress
copying process. They produced writing more indelible than the regular graphite
pencils because they contained aniline dyes. Copying pencils were used in James
Watt's wet transfer copying process in the 1870s and later in the hectograph
(1880) and spirit duplicator (1923).