Great idea @SensibleSal66, i wonder why i didn't come up with it? Oh yeah, that's right, i work. (Just kidding buddy. I know what you got going on. You know i luvs ya)
I've found... 40 something of them, A few MBR, a couple Lowells. I've got a whole set of 2019 and 2020 i've traded for to get one whole set. All other designs have eluded me, but I got shut down with covid by the banks and haven't been able to hunt like I was in 2019, I just got lucky with the rollout of the American Memorial Park boxes and didn't get the boxes with lowell in them. The Amp design released on April 1st 2019, got my first solid box on May 9th, and my 2nd on May 28th. If it wasn't for those 42 Amp Ws fr0m those two boxes, I'd have about half dozen to a dozen tops. No where near the astounding 192 you've found though That must have been a lot of hunting!
You found 42 AMP Ws?! Holy moly, back the Brinks truck up! Super jealous. If i have any you're looking for, mine are all circulation, but I'd swap. Zero pressure, just trying to round the numbers out on my end, lol.
I was going to edit to add one more that photo'd kind of good that I found pictures off but too many posts since and can't edit... So I make a new post this one has more spotting on obverse unfortunately and pictures also from May 2019, when I could get focus working. Hahaha.