I read a article maybe 10 or 15 years ago about Ackley built rifles. He did build a few rifles, very few, if I remember correctly. I don't recall what, if any proof marks distinguish them. The price on a true original Ackley rifle would be sky high.

Because it's built on a Japanese Arisaka action I would seriously doubt this rifle was built by Ackley himself. I think the Arisaka action post dates the man.