Can you imagine what one might face today with QC? Ugh. I've had a number of sets from each era. I've seen some unbelieveably poor quality drums from every era (Covington, Dayton, Fullerton). I have seen near perfect drums from each too. The main thing I noticed in the Covington/Dayton era was sprung re-rings. In CA, bad bearing edges. I will say, Rogers was probably at least as good as the other US drum manufacturers during the era in which they were an American company.
In fairness unless you owned the drums since they were new popped re rings cannot be put on the quality of build.
You have no idea how or where those drums were stored for decades.
from 64to 68 Rogers was superior to every US manufacturer.
as Bill Ludwig II told my friend Steve Badalament of Innovation Drum Co.
"From 64 to 68 Rogers was kicking our ass as far as overall quality"