Is it listed anywhere? That should be your first step before believing you found one. If it is one, somebody would have to explain that to me, because beginning in 1999 all US coinage dies were produced using single-squeeze hubbing. It doesn't resemble the single-squeeze types of "doubling" that have occurred since then from the hub and die chattering when they get shoved together.
I agree it looks like some kind of mechanical doubling because of the shelf-like appearance, the thinner rather than thicker letters (especially the I in LIBERTY), and the lack of corners of the letters showing. But for the sake of argument, if they stopped the double squeeze process in 1999, would it not still be possible to find a 1999 coin made with dies which were created with the old process in 1998? I know that dies, and coins for that matter, are not always made the year they are dated.
It's clear that I can't tell the difference in the doubling. From machine doubling to a true doubled die. I have to study up on this more. Thank you all
I just found this illustration and a visual helps me a lot more than an explanation without any visuals. This is a good example for me to use, right?
