
"Businesslike High-performance Sports Model with Excellent Roadholding, Superb Brakes and Exceptional Finish"
And:
Highest one-way speed: 84mph (conditions: gusty side wind; 13½ stone rider wearing 2-piece suit).
P.s The forks WERE Marzocchi.
Would have cost you £250 12s 11d (incl purchase tax) from Vic Camp.