"Superb, are they not?" asked Poirot.

"Quite excellent," said M. Papopolous.

"How much should you say they are worth?"

The Greek's face quivered a little.

"Is it really necessary to tell you, M. Poirot?" he asked.

"You are shrewd, M. Papopolous. No, it is not. They are not, for instance, worth five hundred thousand dollars."

Papopolous laughed, and Poirot joined with him.

"As an imitation," said Papopolous, handing them back to Poirot, "they are, as I said, quite excellent. Would it be indiscreet to ask, M. Poirot, where you came across them?"

"Not at all," said Poirot; "I have no objection to telling an old friend like yourself. They were in the possession of the Comte de la Roche."

M. Papopolous' eyebrows lifted themselves eloquently.