It might have been a gift of Pius XII to the village of Riese.
Our Diocese of Hexham & Newcastle in NE England had a cassock of Pope St Pius X given to our then diocesan seminary (now closed) by Cardinal Merry del Val who was Secretary to St Pius. The cassock has been lost & no-one seems to care. We must hope that the authorities there when it 'vanished' will hang their heads in SHAME!!