The Various Papal Mints
Rome was not the only city of the Pontifical States that had a mint: prior to the year 1000, there existed at Ravenna the former imperial mint, which was ceded in 996 to Archbishop Gerberto by Gregory V; there were mints also at Spoleto and at Benevento, former residences of Lombard dukes. The Archbishop of Ravenna, who was a feudatory of the emperor rather than of the pope, coined money as long as his temporal power over that city and its territory lasted. The mint of the Emperor Henry VI was established at Bologna in 1194, and nearly all of the coins struck there bear the motto BONONIA DOCET, or BONONIA MATER STUDIORUM. The baiocchi of Bologna were called bolognini; the gold bolognino was equivalent to a gold sequin. The lira, also a Bolognese coin, was worth 20 bolognini. These coins were struck in the name of the commune; it is only from the time when Bologna was recovered by the Holy See, under Clement VI, that Bolognese coins may be regarded as papal.
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