Depicts the reverse design of Charles I Robert's Gold Florin, showcasing Saint John the Baptist standing. The top inscription reads "Charles I," while the bottom text indicates his birth and death years, "1301–1342." Adorning the space between the top and bottom inscriptions are decorative motifs depicting the Angevin lily on both the left and right sides. Additionally, positioned below the motif on the right side is the engraver's privy mark.

During this period, akin to prevailing practices throughout much of Europe, the design of the Hungarian gold florin mirrored that of the gold coins from Florence, introduced in 1252, featuring the fleur de lis motif known as the fiorino d’oro (also influencing the Hungarian word “Forint”). On the reverse side of King Charles's coins, an image of Saint John the Baptist, the city's patron saint, was depicted, encircled by the legend S IOHANNES B. While a small crown possibly representing the Buda mint appeared at the end of the legend, its consistent presence on all known specimens suggests it more likely signified the Kingdom of Hungary as the issuer, clearly distinguishing it from Florentine coins.

Depicts the obverse design of Charles I Robert's Gold Florin, showcasing the fleur de lis motif, recognized as the fiorino d’oro (also the origin of the Hungarian word “forint”). The top inscription reads "HUNGARY," while the bottom inscription, separated by a dot, indicates the denomination and "FORINT." Positioned between these inscriptions, the year of issue "2012" is displayed on the left side, while the mintmark "BP." is situated on the right side.