The complete story of this error chip (the one on the top) is on ebay at : #1083603968

It's a beauty, uncirculated and a unique find.

Oh, yes, shipping is only $1.00. I absorb the ebay cost in my selling price, as I do my time to pack it, walk to the mailbox in front of my house, gas to get the chip and even the electricity I used to put this on the board and all the other garbage full of excuses normally used to increase the handling charges.