What do the Gold Cadillac round grille emblems for. i know for apperance, but some are diffent.
I would like to get one for my brougham, to put in the middle of the wreath on my grille
http://img.photobucket.com/albums/v230/towncar097/caddyfront2.jpg

It's something that the dealer used to give people when they bought a new Cadillac. Do a search in the general section there are some posts about it there.

It usually specified the number of new Cadillacs you have bought. I think it was called a "Heritage Medallion". The new ones are made different, kind of squared off,less dignified by some tastes.