Federal Pacific / Stab-Lok Breakers
I do not think that you load tested all your breakers. If you sell them, do not advertise that they "worked fine for me" since you do not know if they trip at the appropriate load.  And do let the buyer know what you know about the reliability of these breakers.

This video may convince you to put them in the trash.
http://www.nbcbayarea.com/Federal-Pacific-Circuit-Breakers-Investigation-Finds-Decades-of-Danger-171406921.html

The best thing I can think to do is to hold on to them in case the gov does a buy-back or exchange program to get them out of circulation.  Or a class action suit pays out.