Why is this picture in such a bad condition?
When was it so?
Nobody knows that yet.
Furthermore, there is no signature and document, but all people believe that Leonardo painted this picture.
The expression technique of anatomic in this picture is perfect, therefore it is suggested that this painting is dated the first Milanese period.
It shoul be noted that the panel ia walnut, If this picture was drawn in Florence, it must be poplar.
Mona Lisa – Poplar
Madonna of the Carnation – poplar
Annunciation – poplar
The Baptism of Christ – poplar
Firenze = poplar
Milano = walnut