What are the release dates for Gunslinger - 1961 New Savannah 1-12?

It seems like you're asking about the release dates for a specific issue of the comic book series "Gunslinger". However, there's no known comic series called "Gunslinger" published by "New Savannah" in 1961.

It's possible that:

* You're remembering the title or publisher incorrectly.

* The comic book is very rare or obscure.

* The comic is not actually a comic book but a different type of publication.

Could you please double-check the information and provide more details? For instance:

* Do you have any more information about the comic? (e.g., cover art, characters, story details)

* Are you sure about the publication date and publisher?

* Is it possible this is a comic from a different country?

With more information, I can help you find the release date.