banker, and Law 123 stipulated that a banker was discharged of any liability from a contract of bailment if the notary denied the existence of the contract. Law 124 stipulated that a depositor with a notarized contract of bailment was entitled to redeem the entire value of their deposit, and Law 125 stipulated that a banker was liable for replacement of deposits stolen while in their possession. In China during the Han Dynasty promissory notes appeared in 118 BC and were made of leather. The Romans may have used promissory notes in 57 AD as a durable lightweight substance as evidence of a promise in that time has been found in London among the Bloomberg tablets. Historically, promissory notes have acted as a form of privately issued currency. Flying cash or feiqian was a promissory note used during the Tang dynasty (618 – 907). Flying cash was regularly used by Chinese tea merchants, and could be exchanged for hard currency at provincial capitals. The Chinese concept of promissory notes was introduced by Marco Polo to Europe. According to tradition, in 1325 a promissory note was signed in Milan. However, according to a travelogue of a visit to Prague in 960 by Ibrahim ibn Yaqub, small pieces of cloth were used as a means of trade, with these cloths having a set exchange rate versus silver. Around 1150 the Knights Templar issued promissory notes to pilgrims, pilgrims deposited their valuables with a local Templar preceptory before embarking, received a document indicating the value of their deposit, then used that document upon arrival in the Holy Land to retrieve their funds in an amount of treasure of equal value. Around 1348 in Gorlitz, Germany, the Jewish creditor Adasse owned a promissory note for 71 marks. There is also evidence of promissory notes being issued in 1384 between Genoa and Barcelona, although the letters themselves are lost. The same happens for the ones issued in Valencia in 1371 by Bernat de Codinachs for Manuel d'Entença, a merchant from Huesca (then part of the Crown of Aragon), amounting a total of 100 florins. In all these cases, the promissory notes were used as a rudimentary system of paper money, for the amounts issued could not be easily transported in metal coins between the cities involved. Ginaldo Giovanni Battista Strozzi issued an early form of promissory note in Medina del Campo (Spain), against the city