Probably not, I dont believe that fish tanks are exactly a collectors iteam. I guess it would also depend on what the quality of the tanks were, plus glass tanks now a days are pretty cheep and dont hinder viewing of your aquarium. They might be worth selling to someone that has some sort of buisness or science experiment involving different situations, like breeding and classifying different aquatic enviornmnets. You may get someone on ebay looking for that stuff, but an antique dealer? I dont think so.