In 1930, the English Baron Sir James Gow Mann informed the English Society of Antiquaries of the discovery that the armour with which a group of statues in the Sanctuary of Graces had been clad since the 16th century was not made of papier-mâché, as mistakenly believed, but was authentic. Gathered here, they make up a corpus of worldwide significance, being the most conspicuous collection of Italian armour from the 15th and 16th centuries. In addition to the blow-up of the interior of the sanctuary (reproducing a 19th-century print), to evoke the original room, from whose vaults hangs a crocodile, another one, from the diocesan seminary, has been placed here.
See the volume that, edited by Alberto Riccadonna and Lucio Iasevoli, publishes the complete Italian translation of Mann's first report