“Q – Do you get to keep any of the items of clothing from your projects?
Mark Gatiss gave me the coat after the pilot. He bought it for me and I wore it before you ever saw the pilot or the first series and I don’t think I can ever wear it again. It is one of my favourite things. And I sometimes bring something of my own on set such as my cygnet ring – I’ve used that a lot and I used it for Christopher.” (x)
So that pinkie ring we keep seeing is his own. How interesting.

source: anindoorkitty