This unit underwent the "Deluxe Rebuild" from Craig Ostby @ NOS Valves in 2012. The "Deluxe' was a $500 rebuild with the criteria of getting the best from the amplifier while retaining the intrinsic character. It is equipped with pairs of American made 12AX7s, RCA 7199s, a Mullard 5AR4, and a quad of Russian 6N14N power tubes, equivalent to the 7189. These sound quite good in the amplifier and are nice, tough tubes. The face plate is in excellent shape as are the chassis and transformers. This is a very nice unit outputting 20 watts steady state/channel and 28 peak. I had been using it with Merlin TSMs.
It's unwise, to be charitable, to put a vintage amp into service without a rebuild. Components half a century old can ruin transformers, tubes, and other components, aside from diminishing aural performance. The electrolytics are uniformly bad/out of spec and simply must be replaced. As part of this rebuild, all bias and balance points were made accessible from the top of the unit, so no digging under the hood necessary. All electrolytic caps & filter cap cans were replaced, the silicone diode replaced with bridge rectification, and audiophile grade caps and resistors in critical positions. All socket pins were adjusted for secure connectivity. The cable connections are the stock screw-type typical of the era. The unit will be double-boxed securely for shipping. I'll email user manuals to the buyer. This Scott is ready for decades more of musical enjoyment.