Items in this catalog are truly one of a kind. Thrown off the hump, pieces in this line of work are guided by what the clay wants to do, rather than what the potter wants to do. Each piece has its own unique characteristics and quirks.
"Throwing off the hump is a technique that many potters use to quickly make multiples of a form, typically a small form. In the technique, a large mound of clay is placed on the wheel and roughly centered. The potter can then center enough clay at the top for one form, throw the form, cut off, and repeat the process easily. Throwing off the hump is great for productivity." - https://ceramicartsnetwork.org/daily/article/Throwing-off-the-Hump-to-Create-a-Faceted-Tulip-Bowl