When a planchet it struck out of collar, the above example is centers and the planchet metal spread out in all directions; not all broad strikes are centered.
Broadstrike errors are worth anywhere from $25 for a cent and $145 for a Susan B Anthony Dollar and many will have partial brockage strikes as well. It would have to be an old type silver or gold coin to be worth north of $1,000 and there’s a few examples that have exceeded $2,500. However, modern examples rarely trade for over $100.
Image courtesy of Heritage Auctions