Rolex Day Date Strap giving it the nickname by

giving it the nickname by which its perhaps best known: the President

There's definitely signs that it was used to do what it was meant to do

and this one is a terrific honest example

and Universal Geneve

Rolex Day Date Strap giving it the nickname byWhen Rolex released the Day Date in 1956, it was, in many ways, the brand's saving grace. The brand had all but abandoned complicated wristwatches after the failure of its previous triple calendar moon phase watches, references 8171 and 6062 (the former of which, incidentally, fetched $1. 2 million at Christie's a few years ago). But Rolex secured the patent for the Day Date on July 23, 1955, rushed production, and debuted the model at the Basel fair