Not all the cars come with auction sheets. Only the ones which are sold through auctions have auction sheets. And it's not necessary that accidental car will not have auction sheets.
If a vehicle has been bought through auction house, then it's auction grade and sheet will be must there, irrespective wo 8 grade ki ho ya R, RA, RX, etc. Ki ho.
Jo car auction house k through Na ai ho, stock k through ya kisi aur channel k through ai ho, It may not have any auction sheet at all.