You would know better then I, but about the information it came from (I can't believe I'm saying this) but HBHG, so I think it was more Plantard.
One thing that has always puzzled me is de Cherisey's supposed relationship to Paoli. i.e. nobody has ever questioned the fact that he was on the radio programme with Paoli and it was geographically a swiss-belgium run operation.
The below post is a check on why Chaumeil is involved.
Chaumeil claim 1 above:
The pierced platter aside, the photoes slipped by Paoli were replicas of the treasure of Petroassa after the curator M. Duval.
Chaumeil claim 2:
From the "Napoleon & RlC" thread here at Arcadia.
We have just read Henry Lincoln's Blog dated 22 September 2009 about how in the past Gérard de Sède offered him some photographs of “the treasure of Rennes-le-Château”, and how the photographs of this treasure had appeared in an article in a French magazine written by Jean-Luc Chaumeil (in ‘Charivari’ No 18, Paris, Oct-Dec 1973).
Henry Lincoln failed to identify the “treasure” in question as being that of Pétroassa in Romania, and that the reference to this treasure in relation to Rennes-le-Château was first mentioned by Philippe de Chérisey
– before Gérard de Sède, before Jean-Luc Chaumeil. As a matter of fact it is mentioned in Footnote Three to Chapter Nine (‘The Long-Haired Monarchs’) in The Holy Blood and the Holy Grail.
From Philippe de Chérisey's manuscript, L'Or de Rennes pour un Napoléon (deposited in the Bibliothèque Nationale of Paris in 1975; Tolbiac - Rez-de-jardin – magasin 4- LB44- 2360):
“...in 1837 there was found in Pétroassa in Romania, the objects of the Visigoth treasure coming from Razès. Napoleon had more chance than Monsieur Colbert in 1692, since that one failed with a company in his search for the treasure at Rennes-les-Bains close to the Roc Negre.”
Who gave him the photos? Paoli or de Cherisey? http://en.wikipedia.org/wiki/Pietroasele_treasure
The Pietroasele Treasure (or the Petrossa Treasure) found in Pietroasele, Buzău, Romania, in 1837, is a late fourth-century Gothic treasure that included some twenty-two objects of gold, among the most famous examples of the polychrome style of Migration Period art. Of the twenty-two pieces, only twelve have survived, conserved at the National Museum of Romanian History, in Bucharest: a large eagle-headed fibula and three smaller ones encrusted with semi-precious stones; a patera, or round sacrificial dish, modelled with Orphic figures  surrounding a seated three-dimensional goddess in the center; a twelve-sided cup, a ring with a Gothic runic inscription, a large tray, two other necklaces and a pitcher. Their multiple styles, in which Han Chinese styles have been noted in the belt buckles, Hellenistic styles in the golden bowls, Sasanian motifs in the baskets, and Germanic fashions in the fibulae, are characteristic of the cosmopolitan outlook of the Cernjachov culture in a region without defined topographic confines.
When Alexandru Odobescu published his book on the treasure, he considered that such magnificent work could only have belonged to Athanaric (died 381), leader of the Thervings, a Gothic people. Modern archaeologists cannot connect the hoard with such a glamorous name.
The Pietroasele treasure, an Ostrogothic hoard uncovered in 1837 by local villagers, is on display at the National Museum of Romanian History, in Bucharest.
The original gold hoard, discovered within a large ring barrow known as "Istriţa hill" near Pietroasele, is a late fourth-century Gothic treasure that included some twenty-two objects of gold, among the most famous examples of the polychrome style of Migration Period art. The total weight of the find was approximately 20 kilograms (44 lb).
Of the twenty-two pieces, only twelve have survived, conserved at the National Museum of Romanian History, in Bucharest: a large eagle-headed fibula and three smaller ones encrusted with semi-precious stones; a patera, or round sacrificial dish, modelled with Orphic figures  surrounding a seated three-dimensional goddess in the center; a twelve-sided cup, a ring with a Gothic runic inscription, a large tray, two other necklaces and a pitcher.
The Ring of Pietroassa (or Buzău torc) is a gold Torc-like necklace found in a ring barrow in Pietroassa (now Pietroasele), Buzău County, southern Romania (formerly Wallachia), in 1837. It formed part of a large gold Hoard (the Pietroasele treasure) dated to between 250 and 400 CE. The ring itself is generally assumed to be of Roman-Mediterranean origin, and features a Gothic language inscription in the Elder Futhark runic alphabet.
The inscribed ring remains the subject of considerable academic interest, and a number of theories regarding its origin, the reason for its burial and its date have been proposed. The inscription, which sustained irreparable damage shortly after its discovery, can no longer be read with certainty, and has been subjected to various attempts at reconstruction and interpretation. Recently, however, it has become possible to reconstruct the damaged portion with the aid of rediscovered depictions of the ring in its original state. Taken as a whole, the inscribed ring may offer insight into the nature of the pre-Christian pagan religion of the Goths.
Despite the lack of consensus regarding the exact import of the inscription, scholars seem to agree that its language is some form of Gothic and that the intent behind it was religious. Taylor interprets the inscription as being clearly pagan in nature and indicative of the existence of a temple to which the ring was a votive offering. He derives his date for the burial (210 to 250) from the fact that the Christianizing of the Goths along the Danube is generally considered to have been almost complete within a few generations after their having arrived there in 238. Though paganism among the Goths did survive the initial conversion phase of 250 to 300 - as the martyring of the converted Christian Goths Wereka, Batwin (370) and Sabbas (372) at the hands of the indigenously pagan Goths (in the latter case Athanaric) shows - it was weakened considerably in the following years, and the likelihood of such a deposit being made would have been greatly diminished.
MacLeod and Mees (2006), following Mees (2004), interpret the ring as possibly representing either a "temple-ring" or a "sacred oath-ring", the existence of which in pagan times is documented in Old Norse literature and archaeological finds. Furthermore, they suggest that the inscription could be proof of the existence of 'mother goddess' worship among the Goths - echoing the well-documented worship of 'mother goddesses' in other parts of the Germanic North. MacLeod and Mees also propose that the appearance of both of the Common Germanic terms denoting "holiness" (wīh and hailag) may help to clarify the distinction between the two concepts in the Gothic language, implying that the ring was considered holy, not only for its being connected to one or more divinities, but also in and of itself.
The treasure of the Pietroasahttp://www.vivid.ro/index.php/issue/77/
Professor Mircea Babes, Director of the School of Archaeology at the University of Bucharest and editor of a 1976 critical edition of Odobescu’s work, believes the fort and the villa were home to Athanaric, leader of the Tervingi (traditionally known as the Visigoths) and, like Odobescu, believes that Athanaric was the original owner of the treasure.
Athanaric (uthăn'urik) [key], d. 381, Visigothic chieftain. He led the Visigoths against Emperor Valens and negotiated a favorable peace in 369. A pagan, he persecuted the Christians, and, possibly for that reason, he was involved in a civil war with Fritigern. Defeated by the Huns in 376, he fled to Transylvania and later (381) to Constantinople. There he was received with royal honors by Theodosius I, but he died two weeks later.
Of course, there is no consensus that the treasure was Athanaric's, and from what I've seen, the identification of Thervingi = Visigoths is not certain, either.
Hmmm, oddly, a post where I tried to discuss all this above seems to have disappeared.
I just read "Chaumeil's love of AMORC and Breyer" post by Seeker1.
Again the same old, same old.