Almost 2,000 years ago, a Roman soldier of Celtiberian origin completed his military service at the northernmost edge of the Empire and set out on the long journey home to the lands that today make up the Castilian-Leonese province of Soria, in Spain. ADVERTISEMENT ADVERTISEMENT In his luggage he carried more than souvenirs: a small, exquisite enamelled bronze cup that reproduced, in miniature, the most remote frontier in which he had served. This piece, found by chance centuries later in