Germany says it will restore a depiction stolen by Nazi troops from the Uffizi Gallery in the Italian city of Florence in 1943.
Vase of Flowers, assessed to be worth a large number of euros, has been in the hands of a German family.
In January Uffizi head Eike Schmidt said Germany had an "ethical obligation" to help take it back to the historical center.
Dutch ace Jan van Huysum painted the still life and it was first shown in Florence in 1824.