for Paulson chips, while NOT fool-proof, is to check for UV tagging. UV tagging on the inlay, to my knowledge, does not change for a single batch of inlays. Changes that have been known to happen between re-orders is a UV tag that gets larger, or the position of the UV tag is rotated.

Again, this is not fool-proof, but if there are UV tags present and they are different, chances are a re-order was done.

Also, the UV tag for Paulson is their trademark hat and cane. I am familiar with 3 different sizes, but only see the large size lately. That large size also changes orientation, between re-orders (typically).

Jim