Thank you very much.

Muirenn, that makes sense, they are designed differently than "modern" saddles. If I only could remember my outside-to-outside measurement, I guess I will have to measure again.
So, the S isn't only shorter but also wider... the description on the Brooks homepage doesn't reflect that, it says 175 or 176 for all the B17 Models. Oh maybe you meant the Team Pro, I see now that its S Models are wider?

Ultraviolet, that sounds promising that those saddles could be the right fit for me too. Now that you own both saddles - what's the striking difference between those two? I can't really tell from the photos, except that the Finesse/TeamPro S is shorter.

Now I will have to go and get some cardboard again