Looks like your black one has a top that's of a third variety! Still has a curve, though slightly less pronounced than the Han variety, but with a step (though smaller than the step of the silver Kobold/other black Kobolds). From what I'm seeing in the reference though, I do still think the Han has the full curve, no-step top. It's most apparent in this B&W pre-pro photo that Jedifather posted in another thread:
Wow, really? I've always heard that the silver Kobolds had the smaller 1/4"-20 thread while the black Kobolds have the larger 3/8"-16 thread. You're sure the silver Kobold has a larger hole than the Kobold?
Agree to disagree, I suppose. I agree that it's pretty ambiguous in the Parts of Star Wars photo posted directly in this thread, but it looks like regular old paint to me in the B&W photo. Though you're certainly correct that it's not definitive proof!
Not quite sure what you mean by a "protector". I agree that it's likely designed to protect the glass bulb, but I don't think the bulb would work without this piece as the electronic connection itself is part of that same brass piece. If these bulbs weren't once available to purchase on their own, then how were they to be replaced? Perhaps proprietary, yes, but still what I'd consider "part of the bulb".
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