Single is a 1989 Super Tourist http://www.ebay.co.uk item # 7165710318.
Seller doesn't mention size, but looks to be about a 58cm...
Same seller also lists a 1987 Jack Taylor Tandem (Super Tourist also) 23.5 / 22.5 item # 7165709498- claims Prince Charles actually helped paint one of the box lines while visiting the shop (not sure if this adds to or detracts from the value - depends on whether you are a royalist, I suppose...)
Beware to potential bidders: shipping a tandem to the US is expensive - if you want to know more, as me off list.
No relation to seller at all. But I love Jack Taylors, and hope these two go to someone on the list!
Beware of 96% feedback, by the way...
Duncan Granger
Mountville, PA