Dual Rectifier rackmount

I'm looking to buy a Dual Rectifier. As I'm finding lots of positive comments on the pre-revision G amps, those are the first ones I'm looking at. I saw this ad for a rackmount DR and the seller claims it's revision F: http://www.2dehands.be/muziek/muziekinstrumenten/elektrische-gitaar/mesa-boogie-dual-rectifier-racktifier-97557006.html?qq=racktifier&pcpl=&pc_id=&afd=

Is there a way of telling the amp is truly revision F?
Any thoughts on the rackmount edition vs the regular head?

You would need the serial number to be able to tell.

That guy is on the forum. I'll search for him, and he'll tell you.

Found his profile: http://forum.grailtone.com/memberlist.php?mode=viewprofile&u=12957

The serial number of the racktifier is #851

That serial number is Rev F.

Thanks!