MEXICO CITY.- A Mesoamerican stone mask that left Mexico decades ago and eventually surfaced in Japan is set to return home following its voluntary restitution by a Japanese collector.

The anthropomorphic mask, believed to date to the Late Preclassic period, roughly 700 to 230 BC, was handed over to the Mexican Embassy in Japan on September 10, 2026. Mexican officials say it is the first archaeological object to be restituted to the country from Japan.

According to a preliminary assessment by Mexico’s National Institute of Anthropology and History, or INAH, the mask was likely made in the northern part of what is now the state of Guerrero. Its style and manufacturing technique point to a Mesoamerican origin, although specialists say a more detailed examination will take place once the object arrives in Mexico.

The mask’s modern history remains partly unclear. Mexican authorities say it traveled to France at some point before being sold in 1980 by the Kankan gallery in Tokyo. A Japanese citizen acquired it from the gallery in 2023 and later decided to return it voluntarily.

Made from whitish quartzite, the sculpture depicts a human face with oval eyes, a broad pointed nose and prominent lips. It also has four perforations — two near the top of the head and two in the earlobes — and shows evidence of several working techniques, including abrasion, percussion carving, drilling, grooving and polishing.

The piece arrived with an old certificate identifying it as a Teotihuacan jade mask from the Classic period, dating from AD 200 to 600. INAH specialists have not accepted that identification and plan to test the material and examine the object directly after its repatriation.





Mexican Secretary of Culture Claudia Curiel de Icaza said the return demonstrates how the protection of Mexican cultural heritage can depend on cooperation well beyond the country’s borders. She also praised the collector’s decision to give up the object voluntarily and said its return will allow researchers to study its history more closely.

For INAH specialist Alejandro Bautista Valdespino, the significance of the mask extends beyond the object itself. Its likely connection to northern Guerrero links it to a region with a long and diverse cultural history, and its return could help specialists better understand the artistic traditions of the communities that once occupied the area.

The restitution is being coordinated by the Mexican Embassy in Japan, the Ministry of Foreign Affairs and INAH’s legal and archaeological authorities.

No exact date has yet been announced for the mask’s return to Mexico, but officials said it is expected within the coming weeks.