Quote:
Originally Posted by nworbled
Pardon my ignorance but what is the significance of the "dot over 90" on the tachymetre bezel?
|
I just did a Google search and did a little digging. It seems like the "dot over 90" (aka DON) is merely used as a reference marker on vintage Speedmasters made during certain years? I don't understand the fuss but perhaps I'm missing something?