Look at the dealers inventory online.  Here in MO, I was contacted by the Used Dealer where I bought my car 2 years ago.  He said he has a 2003 V8, 36xxx miles with a "Ford Motor Co 100 Anniversary badge" for $23,000. I looked it (after they closed) and it was nice. Black, tinted, spoiler, special rims & tires.   I also saw a Blue plain 2005 v6 next to it.  I looked online at their  inventory.  BOTH cars are listed for $17,995.  The 2005 v6 has 51xxx, but for same price, I would have to over look the '03 with lesser miles.
I'm not financially able to trade up at this time. So I have to stick it out with my 2000 v6.  Besides- I can't find anywhere that Ford had put a 100 year special edition badeing on the LS. Not ever on the Ford Lincoln website.  Has anyone seen this badge?  I'll go by there tonight and take a pic with my camera phone.