Ok so it took me a while...
Test and pictures are all from today.
Situation is the following:
The motherboard is an A-Trend ATC6254M which should have a V3 2000 and 16MB
It is NOT functional, board powers up but no output can be observed.
If you aren't looking for a functional board I can give it away for 40eur

I can offer you a MSI MS6168 with V3 2000 16MB
Tested and working. 60eur




And a MSI MS6168, V3 2000 8MB
Tested and working. 50eur


