Centenary of the Italian Cooperative Confederation (Italy 2019)

Stamp Centenary of the Italian Cooperative Confederation it reflects the thematic directions:

A bell is a directly struck idiophone percussion instrument. Most bells have the shape of a hollow cup that when struck vibrates in a single strong strike tone, with its sides forming an efficient resonator. The strike may be made by an internal "clapper" or "uvula", an external hammer, or—in small bells—by a small loose sphere enclosed within the body of the bell (jingle bell)

An organization or organisation (Commonwealth English; see spelling differences), is an entity—such as a company, or corporation or an institution (formal organization), or an association—comprising one or more people and having a particular purpose.