Kembery Antique Clocks Ltd has dated this piece to the 1950s.
The Futurematic was made between 1951 and 1959.

The Futurematic was advertised as the worlds first 100% automatic wristwatch. It was also the first ever watch to not feature a winding crown. As there is no winding crown, the watch depends solely on the automatic function to be wound.
Case width 35mm
Kembery Antique Clocks Ltd has dated this piece to the 1950s.
You can view the stock and full dealer information on the Kembery Antique Clocks Ltd Profile Page