I have come across a T&C circlet ring being sold privately due to divorce. I'd love Some information and help with the attached pics if anyone can help me determine authenticity.
Wow, the Tiffany Valuation includes the buyer's name/address - usually this is marked out for privacy concerns - perhaps you'd like to modify that image?
As to authenticity, as none of the pics shows any of the Tiffany markings inside the shank, and overall the pics are not close-up enough to see details, as we really know is there is a ring that looks similar to the Tiffany circlet in a Tiffany box.
Since you have all the purchase details, are you able to phone the Tiffany store and see if their records match the valuation cert? Perhaps you can ask in a roundabout way, asking if you can send it in for polishing/cleaning?