Okay, if anyone would like to add examples of the swirly/corky Moss Agates, they're welcome here now. As noted, I had intended to keep this thread about patches, but I need a thread to link to for the swirly/corky Moss Agate discussions.
I'd have to put a little bit of effort into gathering the advertising evidence for the existence of swirly Moss Agates. It's out there though. For example in one ad, Moss Agates are described as having "exquisite patterns". Patches wouldn't be described as having "exquisite patterns". It's a little confusing since the description is next to a photo of a patch. But Akro ads did a lot of cutting and pasting. Old descriptions with new pics. Old pics with new descriptions. I've gathered a lot of it together before, but I can't remember where I put it. When I find it, I'll add it to this thread.
In the meantime, here is a sample box of Moss Agates with salesman's price label affixed: