More than 90% of the objects, according to an archaeologist, were real and came from pre-Hispanic times.
The woman, who lives in Guatemala, was captured in possession of pre-Hispanic artefacts for the second time, according to the police.
Only a few days prior, she had been halted at the airport in Guatemala City.
In her suitcases, customs officers discovered two Maya stone carvings. The woman claimed that she had purchased them from a market in Antigua.
The 49-year-old woman was accused with “smuggling national treasures” and given bail with the restriction that she stay in Guatemala.
There were 166 items in the automobile she was travelling in with a 62-year-old American passenger, the majority of which were likely used by the Maya.
The Maya civilization peaked between 250 BC and 900 AD, dominating much of what is now southern Mexico, Guatemala, Belize, and portions of Honduras and El Salvador.
The pre-Hispanic antiquities being sold are being outlawed by the governments of Mexico and the countries of Central America.
They are requesting that foreign auction houses do more to identify the provenance of products, as well as increasing checks on travellers bringing suspected items.