OK, so this actually IS a cup. But I meant to highlight that the name of the California company that produced this cup is actually called Chalice of California. I don’t see their items too frequently, but this cup by them was at an antique mall so I snapped off a quick pic for the reference.

They have some really interesting designs, punctuated by “squiggles” like the one on this cup. They also favored a very gritty, rough glaze for their items. I hope to come across more of their pieces in the future. Because it’s a less common company, they’re often misidentified. Leading to the confusion is the rather “freeform” nature of the signatures used on the back of their ware.