I just submitted a letter to the lady at FHQ who deals with eBay and pin-selling. Whether or not you are OK with pin selling, misrepresting merchandise of any type on eBay is NOT cool:
I would like to call to your attention two pins currently being sold on eBay by the same seller:
http://cgi.ebay.com/ws/eBayISAPI.dll...item=715621232
http://cgi.ebay.com/ws/eBayISAPI.dll...item=715623764
Both are modern pins (witness the member numbers on the back rather than names) rather 1940s pins as the seller claims they are. Also, the first pin has too few pearls to be that old, and the second pin is almost certainly a modern sterling one rather than white gold (since white gold pins are not made today).
I don't know what Alpha Xi's policy is in a case like this, but I would hate for a sister to pay an inflated price for what she thinks is an old pin.