The ring belonged to the late Scots actor Ian Richardson and David stated he was "touched and thrilled" to received it.
Richardson's widow, Maroussia, found it while she was tidying up at home and sent it to David on the press night of the play - "It's lovely to have this as a kind of talisman," he told the BBC.
"I immediately wanted to wear it in the performance. I wanted to have a bit of Ian Richardson on stage with me, giving me a hand," he said.
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| Marrisa, Rebecca, Tennant and the ring |
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