Wiktionary
national emblem
n. The official emblem that represents a nation.
Wikipedia
National emblem
A national emblem is an official emblem or seal reserved for use by a nation state or multi-national state as a symbol of that nation. Many nations have a seal or emblem in addition to a national flag and a national coat of arms. Other national symbols, such as national birds, trees, flowers, etc., are listed at lists of national symbols.