If you're interested in the Micromint BCC52 and related controllers, check out these current auctions:
Micromint BCC30 12 Bit 16 Channel A/D Converter
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Micromint MB08 Motherboard CC01 Cardcage 8 Slot
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Micromint BCC52/43D Direct Drive I/O Expansion & ROM C
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current prices $5.99 - $9.99