There are some hidden gems in Siena which escape the mass tourism because they are less publicized. One of these is represented by the Tavolette di Biccherna preserved in the Archivio di Stato of the city.
They are wooden boards painted with tempera or oil which served as covers of records belonging to the office of Biccherna which from the beginning of the Comune until the SEC. XVIII was the judiciary responsible for the administration of public revenues. These records were kept by the Camarlingo -the treasurer head office- who was a friar and the most important officials, the Provveditori (supervisors)
Fraiar Ugo, Camarlingo, frair of san galgano, made by Giulio di Pietro in 1258. This is the oldest Biccherna.
The arms of the four Provveditori; made by Diotisalve di Speme in 1263
The layout of the boards remains, however, unchanged: at the top there is the painting and at the bottom the inscription bearing the date, the names of the main components of Biccherna, the arms of their families.
Or this other which represents The union of the classes and the offering of the keys of the city to the Madonna delle Grazie; made perhaps by Andrea di Niccolò in 1483. This board is important also because testifies the original location of the Maestà made by Duccio di Buoninsegna in 1311 in the Cathedral, that is to say, in the altar. Nowadays you can see this masterpiece at the Museo dell’Opera Metropolitana.
As the Biccherna also another important financial judiciary of Siena called Gabella adopted the custom of painting the covers of some records. The Gabella was responsible for the outcome of the charges and was directed by a Camarlingo –a treasurer- and officers named Esecutori –executors.
The most value works are those performed during the fifteenth century by painters such as
Sano di Pietro: Siena protected by Our Lady while the Camarlingo washes his hands, made in 1541 Benvenuto di
Giovanni: The finances of the town in peace and in war made in 1468
The siege of Montalcino; made by Giovanni di Giorgio in 1553
The Sienese pay tribute to Cardinal Ferdinando de Medici elected Grand Duke of Tuscany; made by Anonymous in 1588
There is no tour guide but there are some panels also in English which explain what you see.
Before to leave the Museum do not forget to stop at their balcony from where you will enjoy an amazing view onto the main square Il Campo.
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