I already mentioned that there was a lineage of 184's, not just a single model. Mine is later than the one just posted, and has full thickness double columns all the way up, instead of a reduced diameter upper pair. It's also motorized and was equipped as a color unit from the get-go. Fortunately, all the dichroic filters were still in excellent shape and only needed a minor cleaning. I have a complete manual on the machine, and somewhere in my archaeological pile of literature, a broader catalog. But there were just so many variations and hybrids and even one-offs (plus the remodeled variations by Durst Pro here in the US, including UV heads, that the whole lineup or museum or whatever would make quite a candy shop for we darkroom gear enthusiasts.
I've even seen the most advanced of the Durst 8x10 colorheads which were never sold to the public, but only to a particular Govt agency (NSA, for 9X9 aerial film). Those were RGB and ran so hot that the filter sets had to be replaced every 6 months. That's why I built my own V-head RGB concept instead, which runs dramatically cooler. It's a very heavy bulky head, with its own customized chassis also built like a tank. The machined steel vac easel alone weighs around 300 lbs. But the electronics are temperamental and need some maintenance at this point. I'm a bit too lazy to bother, and intend to work with my conventional CMY Durst 10X10 colorhead this season, plus my 5X7 RGB head for smaller film sizes. Additive vs Subtractive filtration made a distinct difference for Ciba printing, but not so much anymore with recent Fuji RA4 papers.
Somebody on this forum did once take a picture of my 184 setup, back when they purchased a 20" Thermaphot processor from me. One of these days I'll get around to it. It almost instantly switches to a fancy copy stand, with the camera retainer going onto a special lens disc, once the standard Tripla is removed. It will accept either my P67, my film Nikon, or a DLSR Nikon. I have right angle finders for all of these. The lights are LED rim style, medium quality (around $500 apiece) - plenty adequate for JPEG or print cataloging work, which is all I had in mind, but still don't have time to get around to as a project. Still have a big backlog of B&W drymounting, plus plenty of worthy color negs I want to print before it's too late. Many non-photo projects too.
Thanks, "other Drew" for recalling the model no. of the 184 lower/138 upper hybrid, G139; but it's probable there was even more than one flavor of those. The one I was offered resembled the "184" ice-racer just posted, with reduced diameter dual upper columns, but a 138 5X7 negative stage etc atop that, then a CLS301 colorhead, with a 5X7/4x5 mirror box intermediate; oversized baseboard.