Actually, this Moulton is a 'S' Speed rather than a Speedsix and looks as if it may be the very bike pictured on page 69 of Tony Hadland's book " the Moulton Bicycle". This bike had a front changer mounted on a clamp-on rear extending bracket, 72/64 chainrings on the Williams AB77 crank, and what look a lot like Mafac centerpulls(the levers may be G.B.). This bike apparently was used by Vic Nicholson to break a Cardiff-London TT record in September of 1967. Could the ebay bike be Nicholson's record breaker?
Best regards,
Wes Gadd
Unionville,CT