There's not much out there at all for the ANH one. Combining the screen shots posted on line, screen caps from the cam copy, and seeing it several viewings, I'm confident on the sizing and details of whats shown.
I'll be making this by etching a copper clad printed circuit board and then nickel plating and gold plating the etched PCB to get the right color. I'll mill the board out to be the right shape with the curved top. Four concentric circles with a gap in between each one. Depending on how it turns out, I may not need to paint the rest of the board white. the etched pcb might be close enough in color, but they always turn up a bit yellow, so we'll see.
The other method will be a lot simpler, but probably not as accurate as how the real one was made. It'll just be a laser-cut plastic card with golden foil cut and attached to the card. This one will be a lot less work so would end up costing me less to make. I'm going to try both and update it as I go.
Both ways will have a black plastic base to the card, either cast or 3d printed.