APPRAISER: What can you tell me about these extraordinary Art Deco cufflinks?

GUEST: I've had them for about ten years, and bought them from a friend of mine in St. Louis who used to sell jewelry and I've worn them off and on since that time.

APPRAISER: They have registry letters on them, which talks about the patent. The letters are B-T-S-G-D-G, which is the French patent letters, so this was the first time something like this mechanism was ever made, and I'm going to show the audience the mechanism of how this works. Folds over, like this, and this is what actually goes through the shirt and then holds the cuffs.

GUEST: Mm-hmm.

APPRAISER: I have seen many examples of these done later, but not by Cartier, in gold, gold filled, even costume jewelry-- everyone copied these. They're signed Cartier, made in France, and also the French platinum dog's head. And numbers, 02423, which is a French early numbering system, the zero is important in documenting them. So you've really got almost like a little Cartier history of cufflinks in these. They're single-cut diamonds, the blue stones are cabochon sapphires. They're actually quite nice quality. How much did you pay for them, do you remember?

GUEST: I think like $500 when I bought them.

APPRAISER: In the market today, at auction, I would estimate them $5,000 to $7,000.

GUEST: That's great.

APPRAISER: What do you think?

GUEST: Yeah, that sounds good.