In the 16th century, the Roman iconography of liberty was revived in emblem books and numismatic handbooks where the figure of Libertas is usually depicted with a pileus.
[6] The most extensive use of headgear as a symbol of freedom in the first two centuries after the revival of the Roman iconography was made in the Netherlands, where the cap of liberty was adopted in the form of a contemporary hat.
The Greeks identified one variant with their eastern neighbors and labeled it the "Phrygian cap", although it was actually worn by nearly all Iranian tribes, from the Cappadocians (Old Persian Katpatuka) in the west to the Sakas (OPers.
The cap appears in depictions of the mythological kings Midas and Rhesus of Thrace, the legendary bard Orpheus and other Thraco-Phrygians portrayed in Greek vase-paintings and sculpture.
Although these are military depictions, the headgear is distinguished from "Phrygian helmets" by long ear flaps, and the figures are also identified as "barbarians" by their trousers.
[citation needed] While the Phrygian cap was of wool or soft leather, in pre-Hellenistic times the Greeks had already developed a military helmet that had a similarly characteristic flipped-over tip.
Peltasts of Thrace and Paeonia), whose headgear – aside from the traditional alopekis caps of fox skin – also included stiff leather helmets in imitation of the bronze ones.
The symbol of Libertas as a female figure holding the Phrygian cap upon a spear appeared in the 1500’s in the Apotheosis of Venice, a major painting by Paolo Veronese in the Ducal palace, iconography that would later be reused in French and American art and coinage.
In 1675, the anti-tax and anti-nobility Stamp-Paper revolt erupted in Brittany and north-western France, where it became known as the bonnets rouges uprising after the blue or red caps worn by the insurgents.
The use of a Phrygian-style cap as a symbol of revolutionary France is first documented in May 1790, at a festival in Troyes adorning a statue representing the nation, and at Lyon, on a lance carried by the goddess Libertas.
[16] By wearing the bonnet rouge and sans-culottes ("without silk breeches"), the Parisian working class made their revolutionary ardor and plebeian solidarity immediately recognizable.
By mid-1791, these mocking fashion statements included the bonnet rouge as Parisian hairstyle, proclaimed by the Marquis de Villette (12 July 1791) as "the civic crown of the free man and French regeneration."
On 15 July 1792, seeking to suppress the frivolity, François Christophe Kellermann, 1st Duc de Valmy, published an essay in which the Duke sought to establish the bonnet rouge as a sacred symbol that could only be worn by those with merit.
Following a suggestion by Gaan Coulon, the Convention decreed that convicts would not be permitted to wear the red cap, as it was consecrated as the badge of citizenship and freedom.
During the period of the Reign of Terror (September 1793 – July 1794), the cap was adopted defensively even by those who might be denounced as moderates or aristocrats and were especially keen to advertise their adherence to the new regime.
The anti-federalist movement likewise instrumentalized the figure, as in a cartoon from 1796 in which Columbia is overwhelmed by a huge American eagle holding a Liberty Pole under its wings.
[22] The cap's last appearance on circulating coinage was the Walking Liberty Half Dollar, which was minted through 1947 (and reused on the current bullion American Silver Eagle).
Today, it is featured on the coats of arms or national flags of Argentina, Bolivia, Colombia, Republica Dominicana, Cuba, El Salvador, Haiti, Nicaragua and Paraguay.