Help Identifying a Copy of the Hobbit

Hello hello! I bought a copy of the Hobbit as it was going fairly cheap. It's still in the post, but I'm a bit impatient and can't for the life of me identify it.

It's listed as "Single hardback volume : The Hobbit by J R R Tolkein 1967 Twelfth Printing by Ballantine USA."

But I'm scratching my head as I can't find any Hardbacks at that time by BB and I can't square the naked cover anywhere.

Any help gratefully appreciated!