I don't think they are, but I'm only guessing. They're shipped from Asia, not that that means anything, but makes me think it's not official merchandise. But it's a nice item, and the price too for what it is would make it a fine purchase. I'm so tempted myself.
I think they're hand made. You can buy neon signs and write whatever you want on it. I can even sell you an EXCLUSIVE Frank Black neon sign! Cheap! Contact me privately, we'll talk...
Denis "His chops are too righteous. The helmets can't handle this level of rock 'n' roll. Karen, do something!"