It's disputed as to whether these horns use an SX90 body or a Buffet S3 Prestige body. My (Pete) *opinion* is that these are SX90s, with the exception of the low B/Bb key, which is an obvious Buffet design.
You might notice that I'm posting a few horns in here that are actively for sale.
I'm doing that for a few folks that have been long-time contributors here.
The standard disclaimer applies: they're not my horns, I don't claim they're good or they're in perfect shape, etc.
If you want to list your horn, e-mail me at thesaxinfo-at-gmail.com and we might be able to work something out.