Hi Alan,
first, good to see our UK eyes on ground again, secondly unfortunate that looks to be a waste of time.
Scant on details in the ad and won't get back to you promptly. Maybe knew you wouldn't buy if he answered your queries truthfully.
Maybe worth waiting a couple more days for a response if he's close to you and you want to take a look in person.
That's off a very old model, probably takes the old barrel type piston carburettor.
Hope you get what you're after.
