Don't ask me what I did with them, but I found only one, poorly stored, out of its packaging and a little damaged, but still in acceptable condition.
I cleaned it as best I could and here is the result.
This stack is with Pana G9 in HR mode, Nikon TU Plan 20/0.40 ELWD + 105mm tube lens @ 10.5X on sensor, some cropping.

See bigger: https://images2.imgbox.com/0a/89/hFt9WQ7Z_o.jpg
Best,
- Macrero