Well no contact from the seller yet despite me contacting him minutes after winning it.
I'm desperate to know what it is now.
I'm assuming it's going to be sub 10HP, and anywhere between 1965 and 1980. With a better description and a photo I'd have to be very unlucky not to get the £56 back.
Unless it's really old, interesting, and will polish up nicely, then Mrs Nasher will have a new 'Feature' hanging on the wall of the landing