I admit I was playing that one a little tactically, in case anyone wasn't convinced it was the 7B this was my ace, you might say!
And thus: the weathering on the sign matching the 7B:

Not only has it been verified, but the door handle is missing a top screw!
Bill "the Doctor" Rudloff

Haha well spotted! Did that particular handle have 2 screw holes before? I seem to remembering it having one on the series 5 prop...

The Series 5 (and maybe 6) prop(s) had single screw handles.  It seems they got lucky for the most recent box(es) to get chrome double screw handles.
Bill "the Doctor" Rudloff

take a look at this

I think that's a promotional prop.  They've had it on display since middle of last year.  Notice it has the narrower panels like the Series 7B prop.

Bill "the Doctor" Rudloff

And here's the Series 5 box on it's first outing.

Bill "the Doctor" Rudloff

And also the London BBC Promotional box.

Bill "the Doctor" Rudloff

I posted an update about the "Series 8" box here. As it relates to the Christmas Special it's under the spoiler thread. http://tardisbuilders.com/index.php?topic=4631.msg56402#msg56402
Bill "the Doctor" Rudloff