The phrase "Under the Sun of Rome" does not refer to a specific work of art or literature. It's a general phrase that could refer to a variety of things related to ancient Rome.

To help me understand your question, could you please provide more context? For example:

* Is it a book, movie, or something else?

* Do you know any specific details about it?

* Are you looking for information about a particular author or artist?

With more information, I can help you pinpoint the creation date of the work you're interested in.