I've got the Bates leather version (Bates is Wintec) that I would be prepared to sell, was going to let it go with the horse. 17in, good condition with blocks. PM for info if interested.
Not sure what the difference is I have dug out the paperwork on mine and I have a Pro Dressage Cair 17.5 so I think its not what you are looking for its black pm me if I can be of any more help.
I have 2 17.5 Isabells. I definitely want to sell one and might let both go. One is Cair and less used than the other, but both are in good condition and have been looked after. PM me if interested.
Was just about to put my 17.5" with CAIR on the BD classifieds website. I was also going to put one of my 18" with CAIR on BD too. I find that I usually ride in a 17.5" saddle but have to go up a size with the Wintec Isabell.
I have a variety of different plates available that I could fit to the saddle.