Classic (adjective)

1. Judged over a period of time to be of the highest quality and outstanding of its kind.
2. Representing the best of a particular type or style.
3. Of recognized authority, excellence, or preeminence.

Origin:

Late middle english: via old french from latin classicus, from classis "class".

Examples:

1. The novel is a classic of literature.
2. The film is a classic of cinema.
3. The song is a classic of rock music.
4. The painting is a classic of art.
5. The car is a classic of automotive design.