If you look at the sheer number of problems with coil springs listed here and elsewhere, you would never make that statement.
Additionally, it is nearly impossible to tell that these springs have broken unless you actually remove the strut assembly from the vehicle or you find a piece in the remaining coils. How can you be sure that your springs never broke? Did you remove the strut assemblies (all 4) and inspect them prior to sale?
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95 Contour SE automatic, 37,000 miles