Mike Wood showed the following in the Rolex Vintage Forum at TimeZone:

“A sterling silver Rolex demi-hunter wristwatch, with signed white enamel dial, signed Rolex / Wilsdorf & Davies signed patented case with screw case back (the flip top lid activated by the button at 6 o’clock), signed nickel-plated Rolex movement, on a period sterling silver bracelet, from around 1916. “

If you are interested in vintage Rolexes (and in other models than the old Subs and DJ’s), you should really check the link.