The character ‘o’ formed with circles. I have done two versions, one with big circles and the other one with smaller.
Without the slipcase
Both back and forth covers
I have made two versions here, the one while in the slipcase it shows the circle and then when it comes out you can see some lines behind it. The other version, when being in the slipcase, the cover shows only a part of the colour circle and when it comes out shows the rest of it.
The cover how it looks in the slipcase
The cover how it looks outside the slipcase
Back and forth covers
I struggle a little bit with Sagmeister’s circle, as I can’t find anything else than a blood drop. I used the same one and some other photographs which show a paper where I placed my finger in my attempt to make a circle