Vintage S-100 cards

I just acquired a number of vintage (circa 1977) S-100 cards. They are listed below: 3) Processor Technology 16k(?) RAM cards - one fully populated with NEC uPD414C chips, which I take to be a 2414 clone. The other two seem to have all of the glue chips, but no RAM. They are identified in silkscreen as ASSY NO.203000 and in etch as 16KRA. 1) Polymorphic Systems 8k RAM card. It is fully populated with 2102 chips. It is a product of Interactive Products Corp. 1) Processor Technology Helios II Controller - presumably for an 8" drive (two 50-pin headers). No LSI. 1) Processor Technology Formatter. Based on its 50-pin header and the header's location, I infer that this card is part of a two card set that is the Helios II listed above. Again, no LSI. 1) Percom Cassette/Terminal I/O card. Carries one each male and female 10-pin connector. Also has an SMC COM2502 chip (40-pin). There is a ~2x4" breadboard area on one end of the card. Obviously, I have no way to know if these cards are functional. However, they are clean and not beaten up. Anybody care? Anyone interested? Any offers? - don