I found it when I searched his room.

Then the hotel manager showed me your wire.

Here's the buckle." He was watching her narrowly as he spoke, and his glance deepened in intensity as he handed over the little packet and watched her unwrap the paper.

But there was not a sign of anything but a little surprised satisfaction in the prima donna's face as she recognized her lost property, and her eyes were ingenuous enough as she turned them on him.
"Why, of course, that's mine!" she exclaimed.

"I'm ever so much obliged to you, Mr.Allerdyke.Yes, I wired to the hotel, in my proper name, you know--Zelie de Longarde is only my professional name.