As I stated in my original message, I have read that Venice remained
NEUTRAL. According to the following, the Florentine oligarchs were
looking forward to "the imminent Turkish invasion of the Kingdom of
Naples."
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http://collections.vam.ac.uk/item/O134080/mehmed-ii-medal-di-giovanni-bertoldo/
Bertoldo di Giovanni was household sculptor to the Medici family in
Florence and designed this, his only signed medal, under the patronage
of Lorenzo de'Medici (Il Magnifico) in about 1480. An envoy was sent
from Mehmed II requesting artists be sent from Florence to Istanbul,
however Bertoldo himself never went to the Sultan's court. He probably
derived this portrait from the artist Gentile Bellini's portrait medal
of Mehmed II, executed during his time in the Sultan's court, an
example of which may have been sent to Florence as a diplomatic gift.
Lorenzo may have commissioned this medal in turn in gratitude for the
Sultan's seizure of the man who assassinated his brother, Guiliano
de'Medici, in the Pazzi conspiracy of 1478, and to demonstrate
Florentine artistic pre-eminence.
The reverse of the medal shows a triumphal chariot holding the
personifications of Ottoman conquered territories. It celebrates
Mehmed's military glory and connects him visually with the Triumphs of
the Roman Emperors, thus flattering his position as self-styled heir
to the Holy Roman Empire after his capture of Constantinople and
defeat of the remains of the Byzantine Empire in 1453. The impresa of
a flaming chair used by the Kings of Naples, enemies of Florence at
that time, is depicted on the side of the triumphal chariot. This
highly political portrait medal implies Lorenzo's support of the
imminent Turkish invasion of the Kingdom of Naples.