I don’t think triple calendar was a thing on Speedmasters until at least the 1990s. Even the first day+date in a proper Speedmaster was [googles] er, 1987, it sez here.
I was gonna say that last night but wanted to check first. Then I forgot.
@ejay2.0 started
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I don’t think triple calendar was a thing on Speedmasters until at least the 1990s. Even the first day+date in a proper Speedmaster was [googles] er, 1987, it sez here.