Police found the artworks in a storage room in Baena - a town near Cordoba - and said a married couple had been suspected of trying to sell art treasures on the black market.
Spanish police on Monday seized a 1,900-year-old Roman marble bust among a trove of 119 archaeological objects found during a raid conducted as part of an investigation to dismantle a trafficking ring.
Police found the artworks in a storage room in Baena - a town near Cordoba in the southern Andalusia region - and said a married couple had been suspected of trying to sell art treasures on the black market.
The "unique and absolutely exceptional" marble bust carved in the first third of the second century AD bears the same features as portraits of imperial princesses of the time, police said in a statement.
Its "artistic quality is similar to (the pieces) exhibited in great museums like the Louvre or the Capitoline Museums in Rome," it added.
