One of the oldest pieces (today non-existent) was a reliquary in the shape of a triumphal arch, donated by Einhard (biographer of Charlemagne and abbot of Saint Servatius) in the 9th century.

At these occasions, the main relics were shown to the pilgrims gathered in Vrijthof square from the dwarf gallery.

[1] In 1579, the church treasure suffered badly during the Sack of Maastricht by the Spanish troops led by the Duke of Parma.

After the conquest of Maastricht by the French in 1794, the chapter of Saint Servatius was made to pay heavy war taxes.

In 1340 it was reported that the treasure of the church was kept in a dark vaulted room on the lower floor of what is called the double chapel.

Many chalices, patens, monstrances and other liturgical objects made of gold or silver were melted down in order to pay the war taxes that the French demanded from the canons.

However, a few liturgical vessels from the Middle Ages survived and quite a few from the Baroque period (notably some Maastricht silver pieces) are still in the collection.

Underneath the ground level floor of the Sacrarium inferior canons' grave stones were found, some dating back to the 13th century.