I have been seeing many auctions advertising Wexford egg trays, and a few listing Fostoria American egg trays.  Neither of these items have ever existed. 

Fostoria produced only one egg tray in all of it's exsistance, and that is a rectangular milk glass piece.  There has never been one made in the American pattern.  The one most often seen being sold as American is actually the Fairfield egg tray by Anchor Hocking.  It can be easily purchased for $10 or less. 

The same Fairfield tray is sometimes also passed off as Wexford, but more often you will see a fancier plate with a relish area in the center being sold as Wexford.  This piece was produced by L.E. Smith from their Heritage line.   Once again, I must note that Hocking never, ever produced an egg tray in the Wexford pattern.  You can look through the original catalog pages and not find such a thing. 

May sellers are listing these items in ignorance, having found their information off of another incorrectly listed auction, and so the problem snowballs.  However, there are several sellers out there who are knowingly mis-representing these items.  You know who you are, and shame on you! 

I hope this helps a few buyers and seller be more savy on what they are purchasing or selling.  Look up both Fairfield egg and Heritage egg, you should find some knowledgeable sellers with these items correctly listed. :)