3 inches tall and 4 inches wide Looks like a corner left from a metal sticker or got stuck on there in the making I wonder if I should take screws out and look in between base and frogs? Might be too...

Wow I did it but forgot to write something first. I was worried I'd get in trouble for making a mess my first day in forum. Thanks for giving me the courage to come and do what I had set out to do Marthahill....