A bonsaist might think that this is

A bonsaist might think that this is a very old and extravagant pot. A bonsaist-potter however knows about the secret of the six feet - it is quite mundane, a mere potter's problem. The potter probably had problems with drying or firing his works. He then just added two feet to prevent a sagging during the process. This fixes the problem, but the visual appearance takes a lot of getting used to.