I do have a pick of the underside of the other amp and can provide upon request. The item "Williamson Audio Tube Amplifier Amp Mono Block Untested with cords" is in sale since Saturday, December 7, 2019. This item is in the category "Consumer Electronics\Vintage Electronics\Vintage Audio & Video\Vintage Amplifiers & Tube Amps".
The seller is "shotoju" and is located in Pittsburgh, Pennsylvania. This item can be shipped to United States.