In the general picture it is not too evident, but the knob metal inlays were darkened (dark gray rusty looking), the dial scutcheon was also in bad shape, some knobs (bandwidth) just didn't work or did with difficulty (band)... The cabinet was also rusty in some parts, as it had some scratches. And when I opened the lid...
All was rusty!. Chassis, transformers, covers, ... Everything!. And no less than 10 transistors were not the original type.
This is a sample of rust, the power transformer looked this bad. You can see also the chassis looking.
And another sample... The covers were all this way.
Want more?. Here you have...
The S-meter face presented this ugly face... I wonder what kind of mess had reached it!