This painting is called The Madonna with Saint Giovannino. It was painted in the 15th century by Domenico Ghirlandaio (1449-1494) and hangs as part of the Loeser collection in the Palazzo Vecchio.
This rock belongs to a settlement from 8200 to 9600 BC. It is a menhir from Tiya, Ethiopia. What we see as swords also appear to be two rockets about to take off.