Dr No[Moderator Omega - Wristscan]
34896
If memory serves correctly, DON gave way to DNN . . .
Nov 18, 2020,17:28 PM
. . . around 1969. I think - and may be wrong about this - that all cal 321 Speedmasters had DON bezels, which then carried over to the first range of transitional cal 861 models and were replaced with DNN bezels sometime in 1969.
DON vs DNN is an issue today mostly because bezels were often replaced during service, so many earlier variants have bezels with misplaced dots or altered scripts. A 105.003 with a DNN that's otherwise original will trade for substantially less than one with a DON. And yes, there's a flourishing trade in bezels, both authentic and not.
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