There does not seem to be a "The Greatest Show on Earth - 1963 Wrecker 1-12" release. It is possible that you are referring to a different film, album, or product.
Please provide more context or details, such as:
* The full name of the movie, album, or product.
* The type of media it is.
* Any other information you have about it.
Once you provide more information, I can help you find the release dates.