Would you be willing to share the markings on the cams?
The 352-360 has C0AE on the end with orange paint between the front lobes. We haven't dug out the 390-375 yet. I've always thought the two cams were the same but I have seen it also questioned.
One thing you can do quickly before cam doctor is just measure the lobe lifts with a 1.5" mic.
I do this on all cams, all 16 lobes, then (years) later you can compare the wear on each lobe.
The main controversy on the early cams is that some places list a .480 net lift, which would make this cam different from the 427 cam's .500 net lift.
Other than that the known "advertised" durations are all the same, just measured differently. Some places say 306-306 advertised, others 274-274 advertised. Of course .050 is not published anywhere so a full measurement would be good to get the history right.