These stamps were issued on July 2,1980 to commemorate the Medici in Europe of 16th century Exihibition with the left stamp showing a painting Cosimo I with his artists by Giorgio Vasari and the right stamp showing Armillary sphere.
The House of Medici was a political dynasty, banking family and later royal house who first began to gather prominence under Cosimo de' Medici in the Republic of Florence during the late 14th century. The family originated in the Mugello region of the Tuscan countryside, gradually rising until they were able to found the Medici Bank. The bank was the largest in Europe during the 15th century, seeing the Medici gain political power in Florence — though officially they remained simply citizens, rather than monarchs. The Medici produced four Popes of the Catholic Church and in 1531 the family became hereditary Dukes of Florence. In 1569, the duchy was elevated to a grand duchy after territorial expansion. They ruled the Grand Duchy of Tuscany from its inception until 1737, with the death of Gian Gastone de' Medici. The grand duchy witnessed degrees of economic growth under the earlier grand dukes, but by the time of Cosimo III de' Medici, Tuscany was both morally and fiscally bankrupt.
Their wealth and influence initially derived from the textile trade guided by the guild of the Arte della Lana. Like other signore families they dominated their city's government. They were able to bring Florence under their family's power, allowing for an environment where art and humanism could flourish. They fostered and inspired the birth of the Italian Renaissance along with other families of Italy.
The most outstanding figure of the 16th century Medici was Cosimo I, who, coming from relatively modest beginnings in the Mugello, rose to supremacy in the whole of Tuscany, conquering the Florentines' most hated rival Siena and founding the Grand Duchy of Tuscany.
Cosimo I de' Medici (June 12, 1519 – April 21, 1574) was Duke of Florence from 1537 to 1574, reigning as the first Grand Duke of Tuscany from 1569.
Among his many accomplishments was the creation of the Uffizi, originally intended to house the government, now one of the world's great art galleries. He also finished the Pitti Palace as a home for the Medici and created the magnificent Boboli Gardens behind the Pitti. He was a great patron of the arts, supporting, among others, Vasari, Cellini, Pontormo, Bronzino, the architect Lanci, and the historians Scipione Ammirato and Benedetto Varchi.
A large bronze equestrian statue of Cosimo I by Giambologna, erected in 1598, still stands today in the Piazza della Signoria, the main square of Florence.
Although none of the Medici themselves were scientists, the family is well known to have been the patrons of the famous Galileo Galilei, who tutored multiple generations of Medici children, and was an important figurehead for his patron's quest for power. Galileo's patronage was eventually abandoned by Ferdinando II, when the Inquisition accused Galileo of heresy. However, the Medici family did afford the scientist a safe haven for many years.