Help with ID -- Uniface medieval silver. [решено]

I've looked around all the usual places for this one (numista, zeno, google) and I'm not having any luck. The clover coat-of-arms is distinctive, but I couldn't find a match. I included a photo of the holder it came in in case it holds a clue, but I've done a lot of searches for Brandenburg with no luck.

Thanks for any help.

Weight: .5g
Diameter: ~15mm

Austria › Austrian states › Austria, Duchy of • Albrecht III (1365-1395)

The first image, having three lobes with something in them along with a shield in the middle of them -
looks like on this (different) coin. So is a start ...
https://en.numista.com/catalogue/pieces81885.html
which that page says is the Coat-of-Arms of Austria.

For comparison ...

Thanks! I think it's actually this one:

https://en.numista.com/catalogue/pieces81714.html

as mine has a six-pointed star, but thank you for putting me on the right track.