There is an item that comes up often on Ebay that should be avoided at all costs.  It is a poster of a concert with Rare Earth/Fleetwood Mac from 1970.  The problem is the picture of Fleetwood Mac on the poster is from 1976 so unless someone has invented a time machine it is not possible to have a 1970 gig with a 1976 photo.  Anway the gig itself never even existed so please dont get ripped off.