looking for an old Octagon Systems CPU, type Micro PC 5066

Hi,

I'm new to the forum. I searched for prior threads but came across none which were relevant. So here goes.
I am looking for an old Octagon Systems CPU, type Micro PC 5066.
As this is a dated card, it is a little difficult to find at a decent price. Second hand boards will do as well.
Any clues, advice or directions as to where I may find such a board would be very helpful.


Thanks!