Issued in Spain on October 1, 1889, this 1 Peseta stamp belongs to the rare "Telegraph drilling" issue, a specialized release used in the telegraphic and early communications system. Designed by Eugenio Julià Jover and printed at the Fábrica Nacional del Sello in typographic technique, the stamp depicts a youthful portrait of King Alfonso XIII, also referred to as "El Niño Rey" due to his early ascension to the throne. The stamp is printed in brown violet, without watermark, perforated 14, and measures 20 x 25 mm. These issues were never intended for standard postal use but instead for telegraph services, adding to their rarity and appeal. The portrait connects with the theme of monarchy, communication history, and 19th-century Spain’s modernization. Stamps of this kind often appear in philatelic references such as Edifil ES 226T and are considered key elements in advanced collections of Spanish telegraphic and fiscal issues. Estimate "$120 – 160". Condition: Very fine, minor perforation irregularities, overall well-preserved with original characteristics visible.