For the life of me cant remember! ,, I used it a couple of times as the other set has a load of keys and was easier to just take the single fob,, Gonna have to check all my jackets and wooly pulleys when I get home.. ! Misses has had the cupboards out where it normally should be.. I could blame her I suppose.
As Ryan says make list of places as you search, if you cant find it, when you do get a new one either from fords or a car key cutter get them to wipe the ecu memory only to remember the one you have and the new one.