Although first registered at the College of Heralds in 1619, Canterbury's coat of arms is medieval in origin and appeared on official documents as long ago as 1380.
Canterbury's links with Royalty - it has been a royal city since at least the 6th century - are denoted by the heraldic leopard, whilst the three black choughs are taken from the arms ascribed to Thomas Becket.
The Heraldic description, or blazon, of the Coat of Arms is: 'Argent Three Cornish Choughs Two and one Sable Beaked and Legged Gules on a Chief of the Last a Leopard Passant Gardant Or'.
In heraldry a �beckit� is a chough, from Thomas a Becket who had three choughs on his coat of arms.