“I could perhaps suggest that the set should be valued by an expert.”

“Excellent, Watson! You scintillate today. Suggest Christie or Sotheby. Your delicacy prevents your putting a price for yourself.”

“But if he won’t see me?”

“Oh, yes, he will see you. He has the collection mania in its most acute form⁠—and especially on this subject, on which he is an acknowledged authority. Sit down, Watson, and I will dictate the letter. No answer needed. You will merely say that you are coming, and why.”

It was an admirable document, short, courteous, and stimulating to the curiosity of the connoisseur. A district messenger was duly dispatched with it. On the same evening, with the precious saucer in my hand and the card of Dr. Hill Barton in my pocket, I set off on my own adventure.