Unfortunately, as it turned out, I had not mentioned to the superintendent my own possession of a duplicate Wulfric; nor had I called Mactavish's attention to the fact that I had pulled a coin of my own for purposes of comparison out of my waistcoat pocket. To say the truth, I was inclined to be a little secretive as yet about my gold Wulfric, because until I had found out all that was known about it I did not want anybody else to be told of my discovery.
At last I had fully satisfied all my curiosity, and was just about to return the Museum Wulfric to its little round compartment in the neat case (having already replaced my own duplicate in my waistcoat pocket), when all at once, I can't say how, I gave a sudden start, and dropped the coin with a jerk unexpectedly upon the floor of the museum.
It rolled away out of sight in a second, and I stood appalled in an agony of distress and terror in the midst of the gallery.
Next moment I had hastily called Mactavish to my side, and got him to lock up the open drawer while we two went down on hands and knees and hunted through the length and breadth of the gallery for the lost Wulfric.
It was absolutely hopeless. Plain sailing as the thing seemed, we could see no trace of the missing coin from one end of the room to the other.
At last I leaned in a cold perspiration against the edge of one of the glass cabinets, and gave it up in despair with a sinking heart. "It's no use, Mactavish," I murmured desperately; "the thing's lost, and we shall never find it."
Mactavish looked me quietly in the face. "In that case, sir," he answered firmly, "by the rules of the Museum I must call the superintendent." He put his hand, with no undue violence, but in a strictly official manner, upon my right shoulder. Then he blew a whistle. "I'm sorry to be rude to you, sir," he went on, apologetically, "but by the rules of the Museum I can't take my hand off you till the superintendent gives me leave to release you."
Another keeper answered the whistle. "Send the superintendent," Mactavish said quietly. "A coin missing."
In a minute the superintendent was upon the spot. When Mactavish told him I had dropped the gold Wulfric of Mercia he shook his head very ominously. "This is a bad business, Mr. Tait," he said gloomily. "A unique coin, as you know, and one of the most valuable in the whole of our large Anglo-Saxon collection."
"Is there a mouse-hole anywhere," I cried in agony; "any place where it might have rolled down and got mislaid or concealed for the moment?"