I'm also looking for the N1931 - Linen inlay chip. I have attached a photo here of the Mint $5.00 chip with a linen inlay. Obviously not the same series, but just like the CJ shiny hats, you will know a linen inlay "when you see one". They are not shiny and have a much more course linen crosshatching.

Hope that helps!
Todd Barrett
#5068-91