T206 miscut values for multiple back ads

[darwinbulldog]

I try to limit myself to starting one T206 thread a year, so somebody stop me if I try another one in the next five months.

My question is about cards that are centered on the front but misaligned on the back, so that parts of (what should have been) two or more backs are visible. I'm aware there's a range in what premium, if any, these cards tend to sell for, but I'm curious how much it varies. I assume the most valuable would clearly show parts of four different backs, with the miscut itself well-centered so that none of them is clearly the predominant back. And I assume the least valuable (no premium?) is one that is barely miscut on one axis so that just a sliver of the adjacent back is visible. T206 freak collectors, what premium would you expect these cards to sell for? (None, 50%, 3x, 10x, 40x,...)?

All four backs showing equally:
Two backs clearly and equally visible, two others barely showing:
One predominant back, two others visible upon close examination:
One predominant back, one other visible upon close examination: