Hi Barbara,
I checked out the auctions again and this time I made sure that this was a ZTA badge (we have a picture of all NPC badges in our Frat Ed. manual). Visit the auction at:
http://cgi.ebay.com/aw-cgi/eBayISAPI...tem=1146205911
The auction is still fairly early, but what's really sad is the seller of the badge. She's a DPhiE and apparently she's selling other GLOs badges and paraphenalia. She tries to defend herself in her "About Me" page saying that she rescues these badges from being sent to the melting pot, but I think it's bull...and she knows that she can make $$$ with the badges.
It really saddens me to see Greeks selling treasured badges. You'd think that they'd be respectful about it.