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| grosso | |
|---|---|
| Name | Grosso |
| Introduced | 13th century |
| Discontinued | varied |
| Mass | varied |
| Composition | silver |
| Obverse | ruler or patron saint |
| Reverse | cross or civic emblem |
grosso is a medieval silver coin first issued in the late 13th century that became influential across Italian city-states and parts of Europe. It served as a high-value denomination alongside local billon and denaro types and played a central role in trade, taxation, and monetary reform during the late Middle Ages. The coin's adoption by mercantile centers and princely mints contributed to standardization efforts that later influenced Renaissance and early modern coinage.
The term derives from a medieval Romance lexeme indicating "large" or "thick" and reflects contemporaneous nomenclature used in Venice, Genoa, and Pisa. Contemporary chancelleries such as those of Charles of Anjou and papal offices in Avignon recorded variants aligning with regional vernaculars used in correspondence with Francesco Petrarca and merchants of the Hanseatic League. Diplomatic treaties like the Peace of Caltabellotta and financial ledgers of Marco Polo's era show terminological overlap with other denominations such as the denaro and grosso tournois in accounts exchanged among Merchants of the Champagne fairs.
City-states including Venice, Genoa, Florence, Siena, and Milan adopted the coin in monetary reforms during the reigns of rulers like Enrico Dandolo and families such as the Visconti and Medici. Papal minting under popes like Boniface VIII and fiscal policies of monarchs like Philip IV of France created parallel silver issues that interacted with English and Iberian currency systems exemplified by the Tower Mint and the Moorish taifa exchanges. Military campaigns such as the War of the Sicilian Vespers and trade agreements with the County of Flanders affected the grossos' circulation, as did fiscal crises recorded in the ledgers of Alfonso X of Castile and the accounts of the Knights Hospitaller.
Regional variants emerged: the Venetian issues struck by the Doge of Venice, Savoyard examples from the House of Savoy, and papal grossetti from Roman mints. Other notable varieties circulated alongside the grosso tournois issued at Tours and the English groat minted at the Royal Mint. Differences mirrored political affiliations—examples tied to the Angevin dynasties, Aragonese crowns, or municipal oligarchies bore distinct iconographic programs similar to those found on coins from the Byzantine Empire or the Kingdom of Naples.
Die work and iconography combined civic heraldry, patron saints, and effigies associated with rulers such as the doge portrayed on Venetian pieces or the busts used by the Sforza. Designs often featured crosses, city arms, and inscriptions invoking authorities like the Pope or regional signoria recorded in notarial archives of Genoa and Florence. Minting techniques linked to workshops in Padua and Bologna evolved with metallurgical inputs traded through Antwerp and raw-silver flows from mines under the control of the Crown of Castile and mining enterprises near Kraków.
Merchants of the Italian maritime republics and banking houses such as the Medici Bank and Peruzzi used the coin in long-distance trade spanning the Levant, Flanders, and the Iberian Peninsula. Its relative silver content made it a preferred instrument for large transactions, treaty payments, and mercenary payrolls during conflicts like the Hundred Years' War. Exchange relationships with the ducat and regional groats are documented in account books of Luca Pacioli-era merchants and commercial statutes enacted by municipal councils in Padua and Pisa. Debasement episodes mirrored broader fiscal pressures experienced by rulers like Louis IX and merchants recorded disputes in Genoese notarial records.
Numismatists and museums—British Museum, Bibliothèque nationale de France, Museo Nazionale del Bargello—hold prominent collections of specimens used in exhibitions on medieval trade and coinage reform. Auction houses like Sotheby's and scholarly catalogues from institutions such as the American Numismatic Society and the Società Numismatica Italiana document provenance, typologies, and die-link studies. Modern scholarly interest connects grossi to studies by numismatists like Philip Grierson and economic historians referencing primary sources in the archives of Venice and the Archivio di Stato di Firenze. Collectors prize examples with clear legends linking to figures such as the doge and mintmarks traceable to workshops associated with the House of Visconti.
Category:Medieval coins