Doctor Who: Why Peter Capaldi's Twelfth Doctor Wears A Ring

The 12th Doctor’s ring had personal significance.

Making my 12th doctor costume: The Capaldi look - a Doctor in civvies!

Peter getting in trouble for not removing his wedding ring for filming

Worst to Best Doctor Who Regenerations

Peter Capaldi - Trivia - IMDb

Review: 'Doctor Who' Christmas Special Is Emotional But Gels

The Doctor's Ring - Blogtor Who

Peter Capaldi films Doctor Who scenes at Cardiff University

Doctor Who 12th Doctor 5.5″ Figure in White Shirt – Merchandise Guide - The Doctor Who Site

Just Noticed the 12th Doctor wears the same outfit as the Master : r/doctorwho

That 'Doctor Who' continuity reference explained: Who are the clockwork robots? - CNET