Monami Co., Ltd (KRX: 005360) is a Korean maker of stationery, printer supplies, office supplies, pens and other writing instruments as well as artist materials.

For example, the edition motivated by the Korean poem 'Dong-ju Yun(윤동주 시인)'.

[9] The pen's designation can be explained by the fact that the 153 was only the third product the company produced and that it originally sold for 15 won,[10] the price of a newspaper or a bus ride at the time.

[11] While the quality and price of this remarkable pen have risen,[12] the design remains unchanged.

[13] Monami has factories at Ansan, South Korea, and Rayong, Thailand.