Issued on July 1, 1898, by the Portuguese colony of Macau, this typographed definitive stamp depicts King Carlos I of Portugal (1863–1908), a monarch emblematic of late 19th-century colonial authority and European royalty. Designed by Louis-Eugène Mouchon and printed by Casa da Moeda de Portugal, the stamp is rendered in salmon color, measuring 24 x 27 mm, with a denomination of 1 avo and perforation 11¾. This issue was part of a broader series featuring royal portraits, symbolizing political continuity and colonial governance. The block offered here consists of four mint never hinged stamps with full original gum, sharply printed and well-aligned. Catalogued as Michel MO 79A, Scott MO 76, Yvert et Tellier MO 79, Stanley Gibbons MO 113, and Afinsa MO 79, this block holds aesthetic, historical, and philatelic significance due to its colonial context and refined design. Estimate "$95 – 120"