Koh-i-Noor Hardtmuth
Czech maker of pencils and drawing materials, known for the yellow 1500 pencil.
The company was founded by Joseph Hardtmuth in Vienna, who devised a way of mixing graphite and clay to make pencils of different grades. Production later moved to České Budějovice.
The Koh-i-Noor 1500, named after the famous diamond, was shown at the Paris Exposition of 1889. Its yellow lacquer became the model for many other pencils.
The yellow lacquer and the name Koh-i-Noor in gold.
The grade printed on the pencil, from soft to hard.