VIN number would be, I think, the only true way to tell for sure, as most Pro options can be added. Also the one color each year that is only available in the Pro model. But I guess you could paint one to match [emoji23]
Get the VIN number and online you can get all the info at www.vindecoder.net or similar sites KBB or CarFax etc. If that is the case, I would never do business with these guys.