Circa 1968. This board is reported to be 7’3" x 21 1/2” x 2 1/2”...but I doubt it was that thin in the middle. Probably closer to 3".
The Volan cloth with cut laps and a glueline stringer are classics! Nice S-Deck too.
Ted Spencer's designs were leading edge at the time, in part because he was a world class surfer who was involved with the development of the first short boards, and in part because he was an open minded chap.
This board would probably ride pretty well by today's hull standards!