Got this as a wedding gift over 3 years ago.

Absolutely love it and the door is self closing. You can slam it and it catches itself and shuts on its own. I assume that is what you mean.

Attorney here.

The original version of A New Hope should enter the public domain in 2072.

The Special Edition of A New Hope should enter the public domain in 2092.

The despecialized edition uses work from the special edition and would not be legally distributable until at least 2092. But as to your question on resolution, I do not believe copyright law would differentiate between a work bases solely on the published resolution. As the other comment suggests, A high res scan of the original A New Hope, if it exists, would be in the public domain in 2072.