This study suggests that if this Calvary has these remarkable characteristics it is not by chance. The only valid explanation that can [be] advanced is that the sculptor of the Calvary saw the original or an extremely precise copy of the TS « head » very closely and then engraved the various components in the stone of the Calvary.
The representation of Mandylion in the shape of an icon within a landscaped frame similar to the frame of the image of Edessa can be explained only by a precise chronology of the events which made the history of the TS.
In addition, it should be noted that while the Shroud disappeared between 1206 and 1350, a Templar worship of a « magic head » or Baphomet appeared towards 1265. This worship was declared « idolatrous » in 1307 at the time of the arrest of Templars by the King of France Philippe the Beautiful, and was used as the indictment basis for the inquisitors [ the Holy Office during the Trial of the Templars until 1314.
Link to paper: http://www.cirac.org/Mandylion.pdf