Since the price of silver was down today, I checked with my dealer and he had taken in 25 Mercs; I bought them and this one was among them.
I don't have any Merc's yet... I don't have a ton of American coins yet... My collection is still growing and hopefully one day I can afford a gold coin
For your first gold coin I would advise the $1 gold liberty/princess head the lowest u.s gold denomination you will need to save around $200 but its well worth it.
I've got a few mercs but I bought this one a few weeks ago because it caught my eye and i just couldn't resist it lol
Here's a couple of the '40-S rim to wing die breaks I've acquired. And here's an obverse die in 3 pieces.
My theory is the San Francisco mint didn't receive enough dies for production that year. I would think that die came out of service in pieces, and this is not the only obverse die that had cracks from rim to rim.