Vintage 1970s Pioneer Stereo Receiver Model SX-727 Working Condition

I got this at a radio shop estate sale. It's in great working condition although cosmetically it could use some work. It has some sort of felt material all over it . It was black now it's kind of grayish. According to the ticket under the stereo it came from a Buddhist temple who brought it in to be serviced 30 years ago but never came back to pick it up. The back looks like the screws are rusty but the unit is solid,nothing shaky or loose. All lights work and all knobs turn or press as they should. I think a couple knobs are not original. This is definitely a top notch stereo with a lot of features. Please see pictures for best description. This is a vintage item so I'm selling it AS IS.