In Christianity the keys are accepted as the symbol of St. Peter in his role as the keeper of the keys to the door of the Christian Heaven.
St Peter as generally depicted as an older man. He is often depeicted holding a book or parchment symbolising the letters we believe he wrote (1 & 2 Peter). Often he is depicted as having chains, as it was believed that he was transported as a prisoner back to Rome to be executed. Often he is depicted as holding a sword, or being a fisherman. He is also depicted holding keys, symbolizing those figuratively given to him by Christ for the authority to govern the Church.
In terms of single iconic symbols, often he is depicted as a fish. from being told by Our Lord that he was to become a "Fisher of Men."
Other symbols, based off of his inverted crucifixion, are an upside-down cross (his most famous symbol) and the upside down papal symbol (as he was also considered to be the first pope of the Roman Catholic Church).
The symbol of the rock refer to the church.The leader who entrusted by God is Saint Peter.
Saint Peter Claver has 2 symbols. One is a ship; the other is a cockle shell which he used to baptize slaves.
Yes, Saint Peter is really a saint. If he were not a saint he would not have that title.
Saint Peter's Basilica is larger than Saint Paul's.
Saint Peter was originally a fisherman.
As with the current Saint Peter's Basilica, the old basilica was dedicated to Saint peter the Apostle.
Peter Chanel is the patron saint of Oceania only.
There is no listing anywhere for a saint named Peter Clongson.
Peter's tomb was found under Saint Peter's Basilica.
Saint Peter is fine and enjoying his life in heaven.
St. Peter the Apostle.
Saint Peter's Basilica is in the Vatican.