I have grey umma gumma Specialized Prolong Saddle (smooth leather) Manganese rails. In decent condition. Used for sure though, clear scuffs and ware but no tears and cover is totally in tact. I would be willing to trade (+$) for a smooth black with ti rails. been looking for a smooth black prolong with the WTB SBC cobranding for about 2 years. if anyone has one or wanted to off load one let me now. I'd like to get $100 for this saddle.