I have the remnants of the display unit from an old HP spectrum analyzer, not sure which one it was but it was the 856x? two-part type with the unobtanium interconnect cables. I have a bunch of parts still, including a decent front panel assembly and many of the internal cards, hardware, brackets, etc. I'm going to convert it back to minerals and elements in short order, so if anyone needs a part, let me know and it's yours for shipping costs. I do have the CRT and it is not broken but given the history of the unit I doubt very much that it works or works very well anyhow. If you need any hardware, interconnects or miscellaneous parts, please post a photo so I can figure out what it is/was. I literally just have a box of disassembled junk.