Clear gameboy

Authentic 1998 clear Atomic Purple Gameboy Color! This Gameboy requires headphones - the sound that comes out of the speaker without headphones is extremely quiet, almost to the point where you can't hear it. With headphones games sound great. Power button and volume control work (volume control works with headphones). There is some weird watermark stains on the screen - see picture 8. I've tried to remove them with no luck.