Depicts at the center are two barn swallows nurturing their young. Below, the Latin words "Barn Swallow" are inscribed. On the right side, the engraver's mark (Ki) is displayed. Surrounding the central image is a string of pearls, with the phrase "Protect the nature!" inscribed in a quarter arc on the top left.

The barn swallow, a migratory bird found worldwide, is recognized by its distinctive long, deeply forked tail and colorful plumage. Typically nesting in barns or sheds, they lay 4-6 eggs per clutch and may raise multiple broods in a season. Known for their remarkable migratory journeys spanning thousands of miles between the Northern and Southern Hemispheres, barn swallows exhibit agile flight skills as they feed on flying insects mid-air. Revered for their graceful flight patterns, they symbolize summer in various cultures and contribute significantly to insect population control, making them beloved among birdwatchers and nature enthusiasts globally.

Depicts a detailed outline from the front panel, accompanied by the engraver's mark (Ki) on the right edge. Surrounding the central motif is a string of pearls, with an inscription in a semicircle at the top center. Below this, the official emblem of the World Wide Fund for Nature (WWF) is displayed. On the left side of the lower third, the coat of arms of the Republic of Hungary is depicted, followed by consecutive rows indicating the denomination, year of issue, and mint mark (BP) to its right.

The Hungarian coat of arms, adopted in 1919 and reaffirmed on July 3, 1990, features a vertically divided shield with a rounded base. The left field displays eight red and silver horizontal bars, symbolizing the Árpád dynasty, while the right field depicts three green hills with a golden crown on the center hill and a silver patriarchal cross emerging from it. These elements represent the Danube, Tisza, Dráva, and Száva rivers, and the Tátra, Mátra, and Fátra mountain ranges. Atop the shield rests the Holy Crown of Hungary, also known as the Crown of Saint Stephen, which has been used for coronations since the 12th century. The crown's cross was tilted in the 17th century due to damage, and it has remained in this position since then, symbolizing the enduring history and legitimacy of Hungarian monarchs.