I'm pretty sure 665/7 is the part number for Zeiss 9x12 plate holders of the "Normalfalz" type. The Voigtlaender film-pack holder would be consistent with this (Voigtlaender used the same standard for holders).
Originally Posted by 2F/2F
You'll find plenty of people over in the plate-camera forum who will have a use for these. (Not me; I'm pretty well set for 9x12, though I still need some holders and a ground-glass back for 6.5x9.) Or you could develop a plate-camera addiction of your Very Own. :-)
Thanks for the information, everybody. I'd like to hang on to the holders, but could use some extra cash to get some various repairs done. I will be selling the holders. I gave the enlarger away to a friend for whom I set up a darkroom. I will probably try to get the Yashica unjammed and keep it as a "car camera". The two Vivitar lenses for the Nikon are also going to go (cheap). The Nikkor-S is trash due to its badly marked front element. I might try to take it apart and tweak it for soft focus or something like that, but it is probably just a paperweight or a parts lens. One guy e-mailed me already about the holders. I wonder what they are worth.
OK - holders, case and filters are listed in the classified section!