That is from the hunter that has gotten all of the silver out of circulation in southern california, he's a member of this site, i'm not joking lol (referring to the half dollar mark)
I am in SD I do mostly cents but occasionally I do halves when I can find them most banks in SD tell me they don't have them.
I got the CRH SW mark from some halves I picked up from the BofA on Balboa Ave also a bunch with neon green paint and knife slices over $400 worth of nothing but skunk.
I also get a lot of those painted coins. And I'm not sure who's marks they are. All of my halfs with marks come from Bank of America on Jackson dr. By the Navajo intersection. HH