Lots of threads on this subject if you search through. Since you have started a new one I will comment that the photo you have posted is unclear and the IWC doesn't look very c shape to me but difficult to tell. Mine by the way
Here is a bunch. https://omegaforums.net/threads/the-c-cased-constellation-thread.72308/ Here is mine.
Please educate me, how to find C shape in my collection. I am just missing something and need to be explained here. Regards
I think the IWC Yacht Club should also be called "c-shaped"... So many beautyful watches. I love those relics of the late 60s / early 70s. A better image of my beloved IWC: kind regards, Timo