not all that unusual design. It is older but, I remember seeing similar about twenty years ago that looked to have been CNC Milled, cylindrical, but not with end caps. The head also did not have a flat face. The idea was to impart top spin.
I did a ball fitting at one of the golf superstores a few years ago and wasn't satisfied. First they asked me what brand of ball I wanted to try, and then it turned out they recommended the most expensive ball of that brand. I would like to be able to start from scratch and have them give me recommendations on different brands and models based on my swing parameters, maybe narrow it down to 3 balls that wont make a difference with which one I pick.
I only had that one ball, I must have found it somewhere, and then used it on that particular hole because of the water. After that, I actually bought myself a trophy...a giant #1 with a hole in the middle for the ball.