1957 Supro Comet(?) Antique Amp and Slide Guitar (needs work)

For sale here is a vintage (almost 70 years old) Supro slide guitar and amplifier. There's loads of vintage mojo here. The amplifier uses 12AX7, 5Y3-GT, and 6V6-GT tubes (one of each). It powers on and plays quite well. You'll note in the images that the amplifier only had a volume knob, and not a gain knob like modern amplifiers. If you want it to distort, you have to turn it all the way up, and a boost pedal wouldn't hurt. Having a technician replace the capacitors wouldn't be a bad idea. These might be original. The slide guitar is showing its age with some bubbling under the lamination, which doesn't affect playability. The bigger issue is the original tuner knobs have disintegrated with time. I believe you can replace them pretty easily with a screwdriver if you're careful to find the right replacements with the right dimensions. The pickup seems to be something like a z-coil or like a precision bass. Basically two coils offset from each other giving you single coil tone and hum rejection. The volume and tone pots work and aren't even that scratchy. It's also pretty close to in tune now, but tuning it up is impossible without replacing the tuning machines. The serial numbers place these two at around 1957. I've pasted an Internet archive link below with more information. Selling as a set because I think they belong together. I'm not a vintage gear expert, so I'll consider reasonable offers, but I'm likely to ignore low balls. I typically meet at the Safeway at 7th Street and McDowell. https://offerup.com/redirect/?o=aHR0cHM6Ly93ZWIuYXJjaGl2ZS5vcmcvd2ViLzIwMTIwMjI1MDEwMjIyL2h0dHA6Ly93d3cudmFsY29wYWdlcy5jb20vRGF0aW5nLmh0bWw=