Dahlias: Fall Dividing:You Find the Eyes, 1 by Poochella

Poochella wrote:
Fairy, for you I also managed to dig up a fairly 'bumpy' tuber. I've seen a lot worse. I think 'American Dream' which I used to grow was a notably bumpy tuber. You didn't even have to label it: I knew by one glance what it was because of the many bumps.

The difference between bumps and eyes ABOVE THE NECK is subtle, but if you look for paler, swelling tissue around a bump ; that would be one hint that it's an eye. So the bumps below toward the roots of the blue line are just decoy bumps, above the blue line toward the collar are where the eyes may be.