So I went back to Cochato Nursery on Sunday and took a picture of Krugerand with a Watermark. The marking is similar to what you would see on Tatoo.
Here is the full plant.
And here is a closer view.
Remember this is the end of September so the gold color that you usually see on Krugerand has faded in the sun somewhat. But this plant caused a lot of conversation among convention goers last summer. It's quite an unusual sport. Has anyone else seen anything like this?