I bought this at a charity 20 years ago for my wife for $3,500 and was curious as to how to sell it and what platform to use? Obviously i won’t come close to what i paid for it which is fine. It’s a size 6 but there are no tags indicating that so i added measurements. It’s only been used a handful of times. It is real fur and leather but i don’t have proof of that other than when you feel it it’s obviously not faux. Would you look at this as vintage? Any thoughts on how and where to list it??