Amato wrote the book on these coins: https://www.ha.com/information/bust-half-dollars-book.s?type=surl-jonamato He lists every known example, with identifying marks, history of sales, and condition.
I didn't realize that Heritage had an addendum page - looking at the addendum, I now see the OP's coin listed as 162b, and it sold for $22k in 2017.