This amp was built by Bill Callaham, the renowned hardware manufacturer known for producing high-end Fender and Gibson parts. As with his precision machine work, you can expect extremely high build quality in the amps he produced. The circuit is styled after a 30-watt Trainwreck, making this likely the closest you’ll get to a real one outside of the John Mark builds, which typically start around $6k. The tubes and layout resemble the Liverpool 30, though it's hard to know for certain.
It’s in fantastic shape for its age, showing only minimal signs of wear.