Many years and 3 Bishops ago I made this coat of arms . It gets inserted into the back of a very tall marble presiding chair the Bishop uses. The main design came from someone in the Vatican who designs these utilizing symbolic images and works up a theme for the new Bishop.
This being designed as I built it allows me to swap out the shield and scroll with his motto quite easily without having to recarve the entire piece. That worked fine until now the shape of the shield changed.
On the shield the left side doesn't change . That's the diocese side and the right side is the Bishops side.
This is the shield and motto for the last Bishop who wanted the piece to have a " aged" look to it. As to scale you can see the fish, keys and Rose can easily fit under a penny.