Table with Tile from Truman White House Renovation 1947

The owner received a tile from the White House renovation under Truman from a friend who worked on the renovation.  The owner placed the tile in the top of an antique table, which can be easily popped out of the top of the table.  Notes about where the item came from, including dates, were written by the owner on the back of the tile.  I am looking for an appraisal of both the table and tile.  It will be for sale locally at an estate sale beginning Friday, Aug. 19.  The tile was a surprise and was found as I was cleaning the piece.  I don't have any reason to doubt the authenticity as I have found numerous notes on items kept meticulously by the owners over the years.  There were no maker's mark on the table.