So my parents have been going though a bunch of my grandpa's stuff, and they found a couple of microphones that he's had since the 1950s or so. One of them is a Shure Unisphere PE 585, which judging by the way it looks, I expect is probably the 1950s equivalent to an SM58. The other mic is weird looking, it's called a Sonotone CM-11. I don't really know what a common application for the CM-11 is, but I'm gonna try it out sometime and see if it's total junk or if it's actually got some value 
Do any of you know anything about either of these mics?
Do any of you know anything about either of these mics?
