Depicts the coat of arms of Peru surrounded by the inscription "Central Reserve Bank of Peru", date below.

Peruvian coat of arms consisting of three elements: the top left section shows the vicuña, the national animal, representing the fauna of Peru; the tree in the top right section is the cinchona tree (the source of quinine, a powerful anti-malarial drug and the key flavorant in tonic water), representing the national flora; and the bottom cornucopia with coins spilling from it, represents the mineral resources of the country. It has a palm branch on its left and an laurel one on its right, tied by a ribbon, as well as a Holm oak Civic Crown above it. These represent God, gold, and glory.

Depicts a Titicaca water frog. A geometric design of vertical lines, the national Mint’s mark (LMA), the scientific name of the Titicaca water frog, Telmatobius culeus, the denomination numerals, the name of the monetary unit and a symbol of the series - Concentric circles with a hummingbird are also featured.

Telmatobius culeus, commonly known as the Titicaca water frog, is a medium-large to very large and endangered species of frog in the family Telmatobiidae. It is entirely aquatic and only found in the Lake Titicaca basin, including rivers that flow into it and smaller connected lakes like Arapa, Lagunillas and Saracocha, in the Andean highlands of Bolivia and Peru.

In the late 1960s, an expedition led by Jacques Cousteau reported Titicaca water frogs up to 60 cm (2 ft) in outstretched length and 1 kg (2.2 lb) in weight, making these some of the largest exclusively aquatic frogs in the world (the exclusively aquatic Lake Junin frog can grow larger, as can the helmeted water toad and African goliath frog that sometimes can be seen on land).