I sincerely hope the buyer can get their money back.
Everything from the seller Chri_ame is modern reproductions (and the seller does know this...someone has to beat those signs up) that have been aged. You can buy them yourself for under $30. Here are item numbers to the "before" signs.
191337784497 Mobil Artic
371105536935 Ford Tri Motor
370186274166 Kansas 66
A quick search and you will see the rest.
Looking for National Old Trails Road Signs NOTR and Arizona State/US Route and Road Signs.