The underdrawing '' compares in all respects '' with those found on other panels from the '' Maesta , '' Duccio 's altarpiece in Siena , Mr. Christiansen said .
Duccio
Siena
/people/person/place_lived
Duccio
Siena
/people/deceased_person/place_of_death
PERSON
Duccio
LOCATION
Siena