The more I look at my homebrew, the more it looks like a kit or partial kit. The box is very professional, the chassis is finished the same as the box exterior and the panel, although not engraved except for the indicator lines for the tuning caps, appears to be professionally cut and drilled. On the other hand I can see where some modifications had been made at some time.
I have taken a liking to homebrews, they can be very interesting. I picked up 10 or more at a local auction recently ranging from this quality to total junk usable only for parts. Unfortunately many had seen terrible storage conditions.