eBay
The item you are bidding on is a Mos Valve guitar amplifier made by Real Tube that is a RT-2100 model.  The line out 1/4" socket on the back of the amp needs to be replaced and the speaker got a high hat stand hole and has since retired.  The amp electronic chassis is being sold as is and consists of the entire chassis(photograph) and the remote foot switch.  The remote switch feels a little funky on the red light over drive side(sticky).