What is an E88 cylinder head value, I found one at an Estate sale this weekend????

A bare, stock E88 is nothing particularly special or rare. As an untested and unknown core? I dunno, maybe $25 or so at most? I gave one away for free a year or so ago, because no one would pay anything for it.

If it's an early 72 type with the notched area in the combutsion chamber by the spark plug hole, it's more desirable than the later 73-74 E88. They say it flows better.