This Rust (redrot) lurked behind the rivetted "French restoration" metal as shown in photo two below (note the rivet holes of the metal that was covering up the rusted metal on the car). I owned the car when unbeknownst to me the french restoration was painted over. On the 2nd paint job it was discovered.
Tip: Make sure you visit the shop regularly and take good photographs of the progress of your classic car restoration.
And above all, get a good contract with the restoration company and have your attorney (preferably me) look at it before you go dumping money into a restoration/paint job. By the way, on paint job #2, I thought I was just painting the car and fixing the valances. That turned sideways after the paint and bondo were sanded off to reveal the metal problems.
NOTE: THIS ATTORNEY DOES NOT HANDLE CLASSIC CAR CASES OUTSIDE NC.
You will have to pay a retainer or fee for my NC Restoration Contract.