"But a private collector carried an original version to Argentina in 1928, where it has stayed, Felix-Didier said. "

Let's hope it finds its way into restoration & preservation. I'd love to see it.

There are two early sci-fi classics that are hardly known let alone viewed in Metropolis' case or read as n Huxley's Brave New World. Both deserve more exposure and are essential to the sci-fi and movie/literature world.
One of my first pieces I sold revolved around a time displacement that caused the Rotwang's robot to end up in our world. I won some acclaim for it though I do not generally write Science Fiction.
Thank You for this wonderful news. Not since the discovery of the only existing copy of Murnau's Nosferatu when all were thought destroyed has there been a more important discovery!