A few things anyone bidding might what to be aware of. That one is an original one piece Low/Medium riser spacing scoop and the most important feature is that it still has the flame arrestors present and the openings have not been modified. The down side is that there are several reproductions that have significantly reduced what these can sell for and the "rarity" to own one. All of these I'm aware of have been for Low/Medium riser but Holman Moody did make an original version for Hiriser which is quite a find.