Depicts the portrait of John Harsanyi. Encircled by a border, on the upper left side, "HARSÁNYI" is inscribed, while on the upper right side, "JOHN" is written. On the lower right side, the birth and death years "1920–2000" are visible. To the left of the portrait, the engraver's privy mark is placed at the bottom.

Depicts a triangular endless staircase, symbolizing a hierarchical structure. The staircase's railing is on the left, and a ladder protruding from its center on the right interrupts the outline. This design symbolically represents Harsányi's Nobel-winning achievement, where he introduced a simpler concept (the ladder) that triggered infinite regression (the staircase). The design also includes mandatory elements: the country name at the top edge, the denomination below, "BP" mintmark on the left, and the year "2020" vertically between the ladder's legs. The mintmark contains micro-writing visible at ten times magnification, replicating the letters of the mintmark.