Correos has issued a €1 commemorative stamp for the centenary of its main post-office building in Zaragoza, a prominent Neo-Mudéjar landmark on the Paseo de la Independencia. The stamp was presented on 1 October 2026, shortly before the building’s 100th anniversary on 12 October. The issue turns the architecture of a working postal headquarters into both the subject and the carrier of the commemoration.

The vertical design was created by José María Ródenas Monroy, winner of a competition organised for the centenary. It overlays a drawn view of the building’s façade with the word “ZARAGOZA” broken into four large stacked sections. The dates 1926 and 2026 appear in a handwritten style, while a “100 años” device and the inscription “Edificio de Correos y Telégrafos de Zaragoza” identify the anniversary. The €1 value, España and Correos inscriptions, and the Efemérides series title complete the postal design.

The building was inaugurated in 1926 and has served generations of postal workers and customers from a central position in Zaragoza. Its architecture forms part of the city’s civic identity as well as Spain’s postal heritage. By using the façade as the main visual element, the stamp makes the post office recognisable even to viewers who have never entered it. The strong vertical lettering gives the composition a contemporary graphic layer without hiding the historic structure.

Correos produced 75,000 copies. The official specification gives a vertical format of 28.8 by 40.9 millimetres, printed digitally in offset on coated, gummed, phosphorescent paper. The perforation is 13¼ by 13¾, and the stamps are arranged in sheets of 25. These details are particularly useful because the centenary programme has already generated other postal material, including prepaid postcards and a tourist postmark. The new €1 stamp should therefore be catalogued as a separate national issue rather than conflated with those earlier local or postal-stationery products.

The issue extends a year of activity around the building. Correos previously introduced three prepaid postcards carrying historic and contemporary views of the façade, staircase and public hall, and the main office has offered a centenary tourist cancellation during 2026. The stamp now provides the definitive adhesive postage component of the programme. A collector can build a compact study by combining the national stamp, a centenary postcard, the tourist cancellation and a genuinely posted cover from the Zaragoza office.

The building’s Neo-Mudéjar character gives the issue architectural interest beyond postal history. Mudéjar and Neo-Mudéjar design draw on brickwork, arches and decorative traditions that developed through the interaction of Islamic and Christian artistic cultures in Spain. Zaragoza and Aragón have especially strong associations with Mudéjar heritage. Although the stamp uses a restrained line drawing rather than a colour photograph, the façade remains legible and its vertical rhythm works effectively within the narrow stamp format.

For collectors of postal history, a stamp showing a post-office building has an appealing self-referential quality: the institution, its premises and its service all appear in one object. The subject can be placed in collections on communications, public architecture, government buildings, urban heritage, Zaragoza and centenaries. It also complements issues depicting railway post offices, sorting centres, mail vehicles and other parts of the infrastructure behind correspondence.

The stamp can be identified by the oversized segmented ZARAGOZA lettering and the diagonal placement of the anniversary dates over the façade. Those features are useful checks when buying online, where centenary postcard designs and other souvenirs may appear beside the finished stamp. The issued design also carries the €1 denomination and Efemérides inscription.

Collectors should watch the perforations and gummed surface when assessing condition, particular