This preamp is pure vintage at it's best! This preamplifier and one of the other MC240's I have up right now I got from my best friends dad a few years ago when he was clearing out his house for a move. He was the original owner since 1965! Non smoking house, locked away in a cabinet, Arizona (no rust or pitting) - both of his pieces look great.
Ranking it as 7/10 as I cannot see any significant scratches on the chassis and the front is super clean except for one scratch/mark on the bottom - if you want more close pictures, please ask!
I did do a few things to this C22 after I got it from him.
1) purchase a new set of tubes (Genalex Gold Lion Premium, matched) 2) Took it to the closest authorized McIntosh service center and had them go through it entirely and resolve any issues. They replaced some capacitors, adjusted everything, etc. 3) replaced the burned out front bulbs with some LED bulbs 4) replaced one of the festoon bulbs
I have the original manual as well as the panaloc wings for the side - if you want to mount it in a cabinet as well as the template.
I also purchased a case for it (since my friends dad had it in a rack) from Matt at http://mcintoshcabinets.com/ - walnut colored stain - looks amazing!
I have been using this with a pair of MC240's in mono (also up on Audiogon!) and it sounds amazing - all inputs and modes works, tone controls all solid.
Please let me know if you have any questions or would like to see more pictures.