dear member Vijay has furnished the details. Thanks Vijay.
Re manickavasagar ::
When spoke to couple of Scholars they felt it is early to make such announcement. In news item, even VALLI figured - denoting a bronze.
the iconographical details need to be gone into.
On view was that if Sundara was found, the female Bronze might have been PARAVAI.
Likewise I recall Kottayur Sivakkozhundu desigar in his Peruvudayar Ula re Thanjai Big Temple - published during Sarfoji - prior to formation of ASI by the British and Prof Heultz - mentioned that
(i) the temple was constructed by Karikalan (ii) identified one of the bronzes as that of Amarapujangan !
Thus identifying Bronzes - unless clear parameters are defined - is difficult and more of speculative.
But undoubtedly these finds are going to throw more interesting informations of Chola History.
Offhandedly - these CPs are presumed to be of Rajaraja II or after.
My friend Mr Bala Padhmanaban - who was fortunate enough to touch these plates - told me that it was difficult to lift and turn one plate ! It was pretty heavy!
The ring that links the plates is around 2 ft long !