![Image](https://i.imgur.com/bNTV8oZ.jpg)
![Image](https://i.imgur.com/9WF38QP.jpg)
They both came from the same person in one listing, along with a Japanese layout Jaki keyboard and a tiny no-name RGB keyboard. It's difficult for me to tell if they're custom or not. I don't know anything about chroming or dying keycaps, but the printing on these looks really good so they might be legit. If they were made by Filco, my best guess as to why is that they were made as a sales celebration eg. hitting 10,000 units sold or something like that.