Do the new DON bezels fit the older speedmasters?

[Sothy]

Hi everyone,

I’m slowly, but surely, getting the Speedy bug. I was looking at some older speedmasters online as well as the newest ones at the AD (apart from the new 321 of course), and I was wondering if the new 3861 speedmasters with the aluminium bezels fit the older ones? Looking at some vintage 321 ones online, the bezel has already been replaced with the standard non DON bezel (145.012 models for example that I see online). Are the bezels backward compatible?

Thanks