They have also been short 20 coins per roll about an average of 3 rolls a box.
Yeah, I've been doing halves for 4 years and in different states I've lived. Only had a handful of boxes with those wrappers. My guess is they ran out of half dollar wrappers and use those in a bind.
Heck, I've gotten boxes of halves in VA that were in inside out quarter boxes, haha. Again, I assume they ran out of half boxes.