Barber Quarter - Proof Or Not? Need Help.

certainly appears to have a cameo type of appearance to it along with very well struck details to the relief. I'd say it is by first glance but you'll get some better opinions from Liberty Head experts soon enough.

nice coin, awesome color

Nothing makes me think "proof".
BUT
Nothing makes me think it isn't.

I assume there are some die diagnostics that would confirm or deny the possibility.

The pictures are insufficient to provide any certainty, but if it were a Proof I'd expect to see more detail at the wingtips, talons and arrows than I'm seeing. With that said, it sure looks like an original, Mint State Barber quarter. 1904's circulated heavily, and they're not common in Mint State. Heck, it's worth over $100 in AU. If you can get it for $100, and you trust the originality of the surfaces, don't even hesitate.

As a Proof, it's more like a $1000 coin.

Unfortunately, was sold for 100$. I was worried about weak feathers and shield. And now I think, I messed up... Thank you for your answers.

EDIT: And about proof or not - I saw at slabbed proof 1904 quarters, that "1" from date, are almost perfectly below end of the neck. "1" at "my" coin is going slightly to the right side. I hope you understand what I am talking about:)