The Grand Masters

Grand Masters of the Knights Templar

Each man who held the position of Grand Master of the Knights Templar was the supreme commander of the Poor Fellow-Soldiers of Christ and of the Temple of Solomon , starting with founder Hugues de Payens in 1118. While many Grand Masters chose to hold the position for life, abdication was not unknown...

 of the Knights Templar

Knights Templar

The Poor Fellow-Soldiers of Christ and of the Temple of Solomon , commonly known as the Knights Templar, the Order of the Temple or simply as Templars, were among the most famous of the Western Christian military orders...

 during the later 12th and the 13th century used a double-sided great seal

Seal

Seal commonly refers to:* Pinniped, a diverse group of semi-aquatic marine mammals many of which are commonly called seals* Seal , a device which helps prevent leakage, contain pressure, or exclude contamination where two systems join...

 which showed a representation of The Dome of the Rock

Dome of the Rock

The Dome of the Rock is a shrine located on the Temple Mount in the Old City of Jerusalem. The structure has been refurbished many times since its initial completion in 691 CE at the order of Umayyad Caliph Abd al-Malik...

 (or a circular dome of the Church of the Holy Sepulchre

Church of the Holy Sepulchre

The Church of the Holy Sepulchre, also called the Church of the Resurrection by Eastern Christians, is a church within the walled Old City of Jerusalem. It is a few steps away from the Muristan....

) on one side, and the Order's symbol of two knights on one horse on the other side.
This design is first attested as in use by Bertrand de Blanquefort, the order's sixth Grand Master, in 1158, forty years after its foundation, and it remained in use until the dissolution of the order in 1312.

There was also a smaller, single-sided seal, which showed the Dome of the Rock (or the Holy Sepulchre), only.

Different seals were used by provincial masters of the order.