If you can't find one, ask again next year around this time. I've got a GoldenGate 486DX 25 MHz with the maths co-processor, FDC chip, & 16 MB RAM in storage, I believe. It's been about 3 1/2 years in storage. I won't get my stuff out of my storage locker until around the middle of this coming year when I move. I've got the GoldenGate 486DX 50MHz with the maths co-processor & FDC chip w/ 16 MB RAM installed on the card with the Monitor Master on my A4000.