Help : Hancock and Moore Tufted Balfour Chair

[bluewing]

Hi, I am hoping to get some advice on this local find. It's a pair of Hancock & Moore Tufted Balfour chairs and they look to be in great condition in the pictures. I'm a newbie, I don't see any cracks, stains, or popped buttons in the pictures.

Here are my questions :
1) The seller says they are 2 years old, does that sound right based on the label style? I saw in another thread that this label style hasn't been used for at least a decade. If that's correct, it appears the seller is lying about them being 2 years old.
2) Does anyone know what this leather is? Is this cameo bone-grey?
3) He's willing to take $600 for the pair. Is that a good price?
4) Last one. If I buy them, I plan on getting Duane's Top Coat Matte and Kit #2. Is that the right kit for this leather?

Thanks in advance!