Spotted these while at an antique mall. Up close holding them they feel like real signs, however the sloppy everything gives them away. They have porcelain fronts and backs and split grommets. More pictures if you go to my photobucket starting from picture 1 to picture 7.
http://s663.photobucket.com/albums/uu351/xaveir21/?action=view&current=1344287649.jpg#!oZZ1QQcurrentZZhttp%3A%2F%2Fs663.photobucket.com%2Falbums%2Fuu351%2Fxaveir21%2F%3Faction%3Dview%26current%3D1344287698.jpg