Bigwoo, check out this page from the 1957UK catalog as it shows the headbadge on the Superbe:
http://bulgier.net/pics/bike/Catalog...ze/page_04.jpg
I have a 1957 Wendy (kid's bike):
http://tinyurl.com/ypzsq4. I can snap a closeup of the headbadge if you need it.
For saddle, I'd say a Brooks B66.
Neal