Two Mexican museums have opened a massive show of 1,525 pre-Hispanic and historical artifacts, more than half of which were recovered from abroad.

Mexico has long had a problem with collectors or traffickers taking artifacts out of the country, even though that has been illegal since 1972.

But 881 of the sculptures, vessels and other artifacts on display in Mexico City were returned, either voluntarily by foreign collectors or through police seizures abroad. They were returned from the United States, Italy, France, Germany and the Netherlands.

For most, it is the first time they have been seen in Mexico.

Many of the other 644 pieces had been seized in Mexico or had long sat in warehouses. Forty-six of them are on loan from museums abroad.

"What is being gained here is the possibility for us Mexicans to see these pieces again, or even to see them for the first time," said Miguel Angel Trinidad, one of the curators.

The show, which opened this week, is called "The Greatness of Mexico," and the pieces on display come from pre-Hispanic cultures like the Mayas, Aztecs and Olmecs, as well as later pieces. The pieces will be on display in Mexico City's National Anthropology Museum and the colonial-era museum of the Public Education Department.

The show coincides with the 500th anniversary of the 1521 conquest of Mexico City by the Spanish, and the 200th anniversary of the consummation of Mexico's independence from Spain in 1821.