Embed the whole lot in clear casting plastic, for a nice paperweight.
Or just toss them in the hazardous waste bin and forget about them, move on with your life.
Of course some obsolete chip sources list these for outrageous prices per each, like 48 dollars each -- so I can see why you might want to sell them. You could always list them on Ebay and see if you get any hits, or contact some of the surplus resellers and see if they want to buy. But since yours have not been stored properly... chances are slim.