I just acquired a very unusual Meridian 45CE. It has 45˚swing and shift that locks with a cammed lever, a front standard that's a wonderful (and aesthetically pleasing) improvement over my 45B. There are numerous other changes as well, such as different focusing rails and bracing.

I've owned the 45B for a year or so and have done a fair bit of Googling about the history but have only found mention of there possibly being a 45C prototype. Anyone know the whole story?