Cliff Morgan commentated on Gareth Edwards' legendary try during the Barbarians v New Zealand match in January 1973.
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Gatland is upbeat about his team's prospects following a clean sweep of autumn Tests that stretched Wales' unbeaten record to nine games.
The full-back has announced the birth of his daughter Lily Louise Halfpenny.
Plaid Cymru and the Welsh Liberal Democrats are renewing their calls for a People's Vote.