It is a technically excellent photograph of a cat. There seems to be some minor issue with the way the grey transitions to white background in the lower right (top edge of the cat) which bothers me, but only slightly. A similar issue appears on top of the head, but that one doesn't bother me at all. I don't know what's going on, it could be simply TPF stomping clumsily around in the higher tones.
The grain does seem to play well with the textures of the fur and nose, it's an interesting choice and one I certainly can find no objection to.
I like it Charlie, I've been playing around with "grain" lately on some plants I've been shooting and this is a great use of it, it gives it a very graphic feel to it nicely done!
Nothing says legitimate photography more than sepia and shaved negative carrier edge faked in PS.
No - I much prefer the original. The sepia detracts from it's best feature, the high key contrast.
Nice. To further the high-key look, I'd lighten the fur in the lower right, and maybe even around the edges of the head, but that might be a different image entirely.