HI Michael,
Thanks for showing us that rare and beautiful piece! :-!
Here's my modern version...
This watch came with a highly polished finish on the bezel. I removed the bezel and gave it a satin finish.
Disclaimer: I am not a watchmaker, nor have I ever taken a class in watchmaking. I've learned what I know from trial and error, fiddling with my watches over the last couple decades, and doing research on the forums.
That being said...I first remove the bracelet from between the lower lugs. Then, for protection, I place bits of masking tape on the two lower lugs and on the case between the lugs. Then it's simply a matter of placing a small, strong knife blade firmly between the case and bezel and applying a small twisting motion....a small pocket knife blade works well.
When removing the bezel, do so over a clean surface and watch for any small parts that may fall free...Sometimes there is a small lever-spring (in Rolex and in my modern UG). Also pay close attention to how the bezel lined up with the watch case, just in case it needs to go back on the watch a certain way (usually doesn't matter, though). When it's time to replace the bezel, make sure the little spring (if involved) is properly in place, put the bezel on the watch, and press firmly with the thumbs until it clicks into position.
I have had great luck performing this on a few watches. It all depends on how brave you are to attempt it on such a rare vintage piece.
Thanks for showing us that rare and beautiful piece! :-!
Here's my modern version...

This watch came with a highly polished finish on the bezel. I removed the bezel and gave it a satin finish.
Disclaimer: I am not a watchmaker, nor have I ever taken a class in watchmaking. I've learned what I know from trial and error, fiddling with my watches over the last couple decades, and doing research on the forums.
That being said...I first remove the bracelet from between the lower lugs. Then, for protection, I place bits of masking tape on the two lower lugs and on the case between the lugs. Then it's simply a matter of placing a small, strong knife blade firmly between the case and bezel and applying a small twisting motion....a small pocket knife blade works well.
When removing the bezel, do so over a clean surface and watch for any small parts that may fall free...Sometimes there is a small lever-spring (in Rolex and in my modern UG). Also pay close attention to how the bezel lined up with the watch case, just in case it needs to go back on the watch a certain way (usually doesn't matter, though). When it's time to replace the bezel, make sure the little spring (if involved) is properly in place, put the bezel on the watch, and press firmly with the thumbs until it clicks into position.
I have had great luck performing this on a few watches. It all depends on how brave you are to attempt it on such a rare vintage piece.