It has always been my understanding the items that serve strictly as a recognition conveyance (plaques, ribbons, banners, trophies) are excluded.
However, if the recognition piece is attached to something with a substantial retail value (an inscription on a Rolex or a brass plate attached to a captain's chair), the FMV of that item must be considered.
I do not have a legal reference for this recollection. It comes from discussions with Counsel at Duke decades ago. You will want to seek advice from Counsel as well.
John
John Taylor Principal, John H. Taylor Consulting, LLC 919.816.5903 Big ideas; small keyboard