'Nazi gold train' investigators start excavating site in Poland

That is a pretty interesting idea for a sub-plot, and can be worked in more realistically than the amnesia/split-personality kind of plot that is more common (Memento, Tyler Durden). Sort of an exploration or investigation of a character's cultural/community genealogy.

It's an interesting idea! But I was being literal, my novel actually exists (http://www.amazon.com/dp/B00QPBYGFI) and one of the major plot points is very similar to this real one. So maybe for the sequel :)

well as far as gold goes they pretty much ingored the sources during the post WW2 world gold consolidation and redistribution but now it might be a bit more complicated. European Jewry wasn't the only source of gold, but it was one of the prominent ones as France and many other European nations actually stowed the gold away in the UK and in other places that weren't occupied. If there are any substantial amounts of goods there there will be a very ugly legal battle if there aren't goods there then anything outside of anything that might add to the historical record should probably be scrapped. While some people might argue that anything from that period has an historical value I quite disagree we all can assume which people trade in things like Hitler's dinnerware http://www.germaniainternational.com/hitler3.html these types of items do not hold any historical value in my eyes, because other than confirming the pretty obvious fact that Hitler have had to eat dinner from time and that he would probably had some fancy plates it doesn't really add anything. And these types of items are usually traded by people who pretty much use them as alter pieces which is probably quite disturbing to most people.

Czechoslovak National bank had about 90 tons before war.