also indicates that it exists as a cancelled version and as a modified version (cancellation/repair). The C/W lists it as unique and probably as a sample and carries a $5K valuation.
If memory serves me right, I know a collector that has one and it is not cancelled, nor repaired! However, I just like it and I am in no way an authority on this chip (or eBay) or much else.
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You've got PLENTY of company on the bus of 