Depending on what type of markers you are talking about.
Die cracks progresses to get worse as the die is continued to be used. They do extend. If there is no image, you have to be careful. The location of the die crack might be on a different area of a device. So an image is important.
Die scratches out in the open fields flatten with time. They will remain strong inside of a device. They R.E.M. a while next to devices. New die scratches can be added over older ones, then again fade.
Keep in mind also, an opposite die may be replaced. If your coin doesn't have a marker, it might be from a fresher die state than an example shown. Or, maybe your coin is not from that die pair?