See the TCR listings and refer to note 015 in relation to the $100 and $500. Having seen a good number of the $5 and $25 which are definitely different to each other it is my opinion that SOME of these fall into the same category. One definite point that can be made is that CJ chips are NOT part of note 015.

Ive been trying to complete and publish a research article on these chips for some time but always have other things to do. The article should be helpful to many and might provoke additional info.