Those look like fake bbv1s?
I don't think those are fake, are they? I think they're just generic Optimus Prime caps.
they used to be listed as bbv1s a year+ ago when i was watching taobao. last time i looked when this subject was brought up, they had just started labeling them as optimuses though.
regardless, i'd wager all of these keycaps came from your standard taobao knock-off store, as you can typically find these four designs (bbv2, hammer skull/hellboy, optimus) at them. aka top post by a varmilo company rep.