Depicts the State Audit Office's official logo with the inscription "150 YEARS THE GUARDIAN OF PUBLIC FUNDS" below. Enclosed within a raised circular ring, the logo bears the values upheld by the Court of Auditors in capital letters and hexadecimal codes: LEGALITY, TRANSPARENCY, ACCOUNTABILITY, CLEANLINESS, EFFICIENCY, and PURPOSE.

Hexadecimal, or base-16, is a numeral system using sixteen symbols to represent numbers, ranging from "0" to "9" and "A" to "F" (or "a" to "f"). It is widely used in computing for its human-friendly representation of binary-coded values, with each hexadecimal digit corresponding to four bits, known as a nibble. For example, an 8-bit byte can be represented as 00 to FF in hexadecimal, covering values from 0 to 255 in decimal.

In mathematics, hexadecimal numbers often use a subscript to denote the base, such as expressing the decimal value 15,478 as 3C7616. Programming languages typically denote hexadecimal numbers with a prefix, like "0x" in C for the value 0x3C76. Hexadecimal is utilized in transfer encoding Base 16, where each byte of plain text is divided into two 4-bit values and represented by two hexadecimal digits.

Depicts the building of the former Hungarian Royal Supreme State Audit Office. Integrated into the depiction, at the bottom right, is the engraver's privy mark. Around the edge, the circular inscription at the top reads "HUNGARY", at the bottom is the denomination and the word "FORINT." On the left side is the "BP." mint mark, and on the right side, vertically, the year of issue "2020" is inscribed. Under at least tenfold magnification, the mint mark reveals micro-engraving with letters identical to the mint mark's given letter.