Korea Post has issued a commemorative stamp marking the 150th anniversary of the birth of Ju Si-gyeong, the scholar whose teaching and research helped establish the modern study of Korean and advance the public use of Hangul. The 500-won stamp entered circulation on 8 October 2026, one day before Hangul Day, giving the anniversary issue a close connection with the celebration of the Korean alphabet.

The design brings together two objects associated with Ju’s legacy. A profile relief from Ju Si-gyeong Plaza supplies the principal portrait, while his 1914 work “The Sounds of Speech” appears beside it as an open book. This pairing presents him not simply as a remembered personality but as a working linguist whose influence came through research, writing and education. The relief and printed volume create a clear distinction between public commemoration and the scholarship being commemorated.

Ju was born in 1876 and became one of the formative figures in Korean-language studies during a period of intense cultural and political change. He contributed to The Independent, the first Korean newspaper produced entirely in Hangul, and devoted himself to grammar, terminology and teaching. In 1908 he helped organise the Korean Language Research Society, and from 1911 he led work on the Malmo dictionary manuscript. His publications included “Korean Grammar” and “The Sounds of Speech”. He died in 1914 at the age of 38, but the vocabulary, methods and educational networks associated with his work continued to influence later scholars.

The official issue listing identifies the stamp as number 3927. Korea Post printed 480,000 copies, arranged in 30,000 sheets of sixteen in a four-by-four format. Each stamp measures 26 by 35.74 millimetres, with an image area of 26 by 34.5 millimetres and perforation of 14½ by 14½. Production combines flat printing in four colours with foil, and POSA, identified with Brebner Print, is credited as printer. The design is by Park Eun-gyeong. These specifications distinguish the postal issue from anniversary posters or other illustrations of Ju.

The stamp has several strong thematic routes. It belongs naturally in collections of South Korea and Hangul, but it also supports exhibits on linguistics, alphabets, literacy, education, dictionaries, books and cultural preservation. The named publication gives it particular value in book and printing themes, while the plaza relief connects it with monuments and civic memory. Its release immediately before Hangul Day strengthens these connections without changing the formal subject, Ju’s 150th birth anniversary.

For a specialised study, an intact sheet preserves the four-by-four arrangement and production context, while a marginal block may retain information not visible on a single example. First-day covers and genuinely carried mail dated around 8 October can document the stamp’s entry into postal use. Collectors should check the fine inscriptions, definition of the relief portrait and book detail, as well as perforations and the foil element. A used example on complete cover may demonstrate the 500-won denomination in an actual postal setting.

The issue’s importance lies in its treatment of intellectual work as national heritage. Ju’s reputation rests not on political office or military achievement but on analysing language, teaching it and building institutions for its study. By placing a memorial portrait beside one of his books, Korea Post turns those activities into the central visual narrative. The result is a postal record of how scholarship can shape cultural identity, and a significant modern addition to worldwide collections devoted to language and writing.