Thanks Claude, I was able to at least narrow it down to being part of the Midnight Series listed there. I have a couple of uncertainties though. First: the top cap is black, but is more pointed like the top on one of the rocket models. The other thing is, all the pictures don't show a lamp with the color liquid and wax mine has.
See included pic. The lamp in question is the tallest in that particular set, and the one that's off.
Thank You! Looking forward to being more involved in the community, and learning more about Lava Lamps. As I put in my information, I've had one for over 20 years, and just used it. Didn't really know much about the background of them, or get involved in a community for them. I was really excited to find out they're still for sale today. I hadn't seen any in several years, so thought they had died out, and the one I had was now a historic relic that I didn't want to lose :). While I don't have any of the really old classics, at least the new ones I have gotten still resemble the original design. My oldest one is the one from 1996, I got second hand. Beyond that I don't know who made it, or generation it is. It still works though.