Puzzle Details
Weight: 133g
Size: diameter 9cm, flattened top-bottom: 8.5cm
Although initially unclear it is indeed possible to mix-up the puzzle to non-trivial solve-states. Pics 4 - 7 show such situations.
External Links
Twisty Puzzles: Minimal Hepta by OSKARhttp://twistypuzzles.com/forum/viewtopic.php?t=30548