Monocoque Stem Help

It looks like I can order these clamps from Otto Frei, as well.

I wanted to follow up on this. I ordered the parts, and sent them with the fantastic information I got here to the last watchmaker. I got the watch back recently, and it finally seems to be in good wearing and running order. It made the month date change well. I love this case style and the dial--which watchmaker #1 did some good work on, fabricating and replacing one of the hour markers. The dial has other problems, but the movement seemed original and complete, and runs perfectly. I had almost given up on this one. You guys saved it for me!
Thank you!
David