Well, I may have screwed up.

When switching lens boards around, I realized that I'd not been very careful separating the cells from my 135 and 150mm Nikkors and that the rear cells will thread interchangeably. I haven't been able to find a reference that would conclusively tell me which rear cell should go with which lens. Anyone have a suggestion on figuring out which one is which? Would a mismatched lens even focus?

Lee