1 ruble 1986 Soviet Union, International year of Peace, type "hut of branches", from circulation

In the word "рубль" the letter "Л" is looks like a hut of branches.

International observance (also known as international dedication or international anniversary) denotes a period of time to observe some issue of international interest or concern. This is used to commemorate, promote and mobilize for action. Many of these periods have been established by the United Nations General Assembly, Economic and Social Council or by UNESCO. In this case, the lead agency for a particular international observance uses the symbolism of the United Nations (UN) or UNESCO, a specially designed logo for the year, and their infrastructure to coordinate events worldwide. It also presents a written report about the event. This summarizes the activities that took place around the world under the auspices of the international observance, and makes recommendations for the future.