The view of La Pique from the farmhouse at Coume Sourde



Priory of Sion: The Coume Sourde “Stone” 1967 – 2007



The drawing of the Coume Sourde “stone” first appeared in Gérard de Sède’s 1967 book L’Or de Rennes, which was a re-written unpublished manuscript by Pierre Plantard. Before that, it was entirely unknown.

In Histoire du Trésor de Rennes-le-Château (1985) “Pierre Jarnac” (Michel Vallet) wrote three things about the ‘PS Prae Cum’ written on the “stone”: that it stood for ‘I shall pray for you’; that ‘Prae-Cum’ was an abbreviation of ‘Praeconum’ signifying ‘The Heralds’ (failing to provide his source of information that ‘Prae-Cum’ was ever an abbreviation); and then offering the final conclusion that “PS is the genitive plural of Prae cum, which means Prayers of Prayers” – but this cannot be supported by any scholarly endorsement.

Probably the most important piece of research involving the Coume-Sourde “stone” is the discovery of its “prototype diagram” originating from Philippe de Chérisey (version number 4, below)

The Coume Sourde “stone” has undergone many different manifestations since its initial appearance in 1967 in Gérard de Sède’s book – a remarkable achievement for something that has never existed in the material world.

In 1990 Pierre Plantard finally conceded that it never existed.


There are 9 versions altogether (and probably some others that have been overlooked):


1) Gérard de Sède,
L’Or de Rennes, ou La Vie insolite
de Bérenger Saunière, curé de Rennes-le-Château
(Rene Julliard; 1967)



2) Jacques Cholet’s Report, dated 25 April, 1967 – revealing
the presence of Pierre Plantard and Philippe de Chérisey
in the area of Rennes-le-Château at least from the early 1960s



3) Taken from a privately produced typewritten manuscript
attributed to Ernest Cros, provenance unknown, 1967?



4) Philippe Marlin Archive, date unknown

© Archive Philippe Marlin



5) Taken From:
‘Pierre dite de Coume-Sourde
trouvée en 1970 a proximité de la Valdieu’



6) Robert Charroux,
Trésors du monde enterrés, emmurés, engloutis
(revised and reprinted edition, Fayard 1972;
first published in 1962 by J’ai Lu)



7) Jean-Luc Chaumeil,
Le Trésor du Triangle d’Or (Editions Alain Lefeuvre, 1979)
– here the Coume Sourde “stone” represents the magic triangle
of Stenay, Gisors and Rennes-le-Château.



8) Taken From:



9) 2007 – Linked with André Douzet: as of yet no updates about this version.





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