I have been doing considerable research this morning in conjunction with this Nieman Marcus Tbird. I hate to tell you this, but only two times has N-M offered Tbirds for sale in their Christmas catalog. 1970 when they sold a pair of 1971 Tbirds for $25,000, and 2001 when they sold 200 2002 Tbirds in two hours time the story goes. That is how Ford introduced the new 2002 Tbird. I have looked at the entire list of car gifts offered for sale since the beginning when they started this. Here are the sources. This one shows it was 1970 when they directly sold a pair of Tbirds for $25,000. A later article states they were 1971 Tbirds.
"Neiman Marcus offered "His and Her" 1971 Thunderbirds
in its 1970 "Christmas Book" ($25,000)"
So there ya go. John Rotella tells me there is no mention of N-M edition cars in his Registry.