Bronze Medal Commemorating 100th Anniversary Of The US Postal Union Issued 1974

bronze medal commemorating the 100th Anniversary of the Universal Postal Union (UPU), issued in 1974.
Here's more about this medal and the organization it celebrates:
Commemoration: The medal marks the centenary of the Universal Postal Union, an international organization established in 1874 to standardize and facilitate international mail services.
Design: The obverse (front) of the medal features a replica of a 1949 U.S. stamp celebrating the UPU, depicting an airplane circling the globe, with inscriptions "100th ANNIVERSARY FOREIGN MAILS" and "UNIVERSAL POSTAL UNION 1874-1974".
Significance of UPU: The UPU, headquartered in Bern, Switzerland, is a specialized agency of the United Nations (since 1948) and the second oldest international organization globally, playing a crucial role in coordinating postal policies and ensuring a worldwide postal system.
Material: While the specific medal in your image is bronze.