EDIT: NEW INFO BELOW WITH MORE PICS OF THE TRANSFORMERS. So, my trade deal finally went through and I got her home today. Oh my! This thing sounds HUGE. The tone is just clean and BIG. I was only playing it through my Avatar 1-12 backup cab in the house, but on 1 it just rattled the windows! So, I attached a few pics. The serial number seems to be gone. Right above the words "Serial NO." there seems to be some goo where there used to be a sticker maybe? So, is the serial number anywhere else on the amp? Inside maybe? And if not, maybe you guys can help me narrow down a time frame for this amp. It's Magnavox era for sure. Hopefully the pics will help. Thanks guys!