My only comment is the 150 coins per minute figure is too high closer would be in the 100 - 120 coin per minute range and that may be pushing it a bit. And that rate brings it right down into the 24,000 - 28,800 coin range which is close to the estimates.
In all honesty I think knows the statistics would help determine a better sense of suppose value. Although it may have nothing in the foreground as far as value but its good information to have.
The real answer to the titular question is "Enough that you'll find several at least 4 or 5 at a decent regional coin show, but not enough for them to be cheap." It's a popular coin, with good reason. If I were only allowed to own one wheat cent for my collection, I'd pick a nice 55 DDO.
That's exactly what I'm saying, and because it is true. It is not that mintages have no use or general importance, but they are, for all practical purposes when it comes to supply, surpassed by survival; one cannot own what no longer exists, and even the most plentiful "classic" US coins do not exist in the numbers they once did. Mintage can be ignored in favor of survival, but survival cannot wisely be ignored in favor of mintage if one wishes to discover the true availability of a coin, and examples previously provided should help prove this as fact.