Great stuff, Ian!
Thank you for making them available all in one thread. I am not one who likes throwing up my hands and saying "we can never know!" There are some very learned folks on this site, and I'd like to think we can at least attempt to develop our capacity to distinguish fakes from authentic relics

I appreciate you contributing to this effort
Here are a few pictures of items currently in museum collections. I'll provide the name of the museum, and let folks speculate as to their authenticity. It may be helpful to compare the condition and patina present.
To start, some items from the Allard Pierson Museum's Luristan collection. In order, you have axes, 'daggers', and 'swords'. [note the similarity of the second blade from the left in the third picture to the example
here ]