Let me guess! It's a '99-P. I have a die crack progression of the '99-P GA SQ's. There are 6 separate coins which show the growth of 5 different cracks as they get longer from continued striking. Just out of curiosity, does your coin have a kidney-shaped raised area on Washington's neck? Chris
May have been platinum. There were a lot of SQ's that got the gold and platinum plating. Nice die cracks.