I am starting to list some chips and "stuff" on Ebay (hanging my head), but the mortgage company would really like me to continue paying them, and Ebay unfortunately is the best venue for some of this stuff :(. I ran across this chip in my collection and only found one Google reference. It appears to be an early (code date 7238S) Intel 256 Byte RAM chip. Is this actually one of those *RARE* type chips?