Another new outfit for Doctor #11 and New TARDIS Key?

[WarMachine]

Sorry if this has been posted but I searched and didn't find anything on it.

I saw this picture last night, that somebody posted of the Doctor Who filming.

The outfit (and bowler hat) are pretty cool but something else caught my eye. It might be some kind of pendant or time piece (it even looks like a crest with a cross on the bottom) but I can't shake the feeling that it looks kinda like a TARDIS key. What do you think? New key design or not a key at all?

CLICKABLE IMAGE URL ... NOT A RICK ROLL, I SWEAR

Also, just feel free to discuss the outfit too.

 

[DarthBatman]

I think it could just be the opposite end of a pocket watch chain.

 

[Zeppo]

I would say that it's likely just a watch fob

 

[Muldwych]

It's a lovely design, but I think its part of the pocket watch chain that people used to add on. Pertwee Dr used to have something around his neck other than a key, I think it was a mini magnifiying glass. Anyone screen grabs of that?

 

[Muldwych]

Oh meant to add. I think Moffat has sort of established that the Dr doesnt need a key from now on, its just a finger click to open the doors. a shame!