i went ahead and posted both of these quarters in the same thread because they look like they both have the same kind of irregularities present. *The rim on both coins is flattened/smashed or not there at all. * The edges are still mostly reeded. * On the obverse of the Michigan quarter, there is a lump(?? bulge??) on Washington's neck as well as above the back of his head at about 2oclock. *They both have a grainy texture to them as well as some gouges/slashes *Both quarters are certainly thinner than your average quarter (especially the 1998). The Michigan quarter weighs 5.50g and the 1998 weighs 5.73g. Then i also weighed a regular Wisconsin state quarter and it weighed 5.65g. (i did that because my scale needs calibrating (its a couple 100ths of a gram off but i dont have the weights to calibrate it so i figured I'd just compare all the quarters based on what my scale was telling me atm.) that's about all the info i have i suppose.. Any thoughts/info would be much appreciated. Thanks!