Doctor Who Series 10: 13 Easter Eggs & References You Might've Missed In 'The Pilot'
6. Out Of Order Sign
And we're back in the Doctor's office! This time, you might have noticed the sign hanging on the TARDIS door which reads 'Out of Order.'
This sign is near identical - in terms of size, shape and font - to the one that the First Doctor hung on his TARDIS in 1966's The War Machines. In that story, the sign actually served a purpose, as police boxes were still around in those days and the Doctor needed to stop passers-by from mistaking the TARDIS for a real one.
The only difference between the two is that the new sign has an added border.