My K0 has a set of Lesters, no help there. The drag bike is a K1 but it's wearing a hog rim, as is my brothers extended fork K2 (I hate it). The next wheels I have here are F0 and F1. I could shoot those.
It is very obviously rounded, if you are not sure, you don't have one. This was the first one that I spotted and knew it was a rolled rim. I'm sure way back when I saw dozens and didn't know it. I still don't understand why the rear is rounded and the front looks more like later wheels.