Sotheby's lists him among presidents who wore 1800-series Day-Dates.
Most common strap size on this line: 20 mm Source: Sotheby's, Wikipedia
Richard M. Nixon's watches
History1 documented fact
Richard M. Nixon is documented wearing the Rolex Day-Date. Each watch below links to its strap size and story.
Only facts a source documents, checked against that page. Something wrong or missing? Use "Report an error".