Well I was watching the Trogly's guitar show on Youtube and he was going through Facebook listings to see if he could make a cool deal on an instrument there and he opened a listing which had one of these amps by Gretsch. Seventies 2x12 solid state number, probably Baldwin made, nothing special but quirky and cool regardless. But that little knob underneath the screwed on logo caught my eye, what was that all about? Well, it turns out to be a lamp. Darkened stage, the band comes on and all that's visible are the Gretsch logos of the amps... That's a STRANGE feature to be fitted as stock to any kind of amp.