I don't want to risk getting banned or anything so if this is inappropriate I apologize in advance and please delete the post.
I have a vintage 1976 John Asaro Planar head that I'm selling. I felt that CA.org members should have the opportunity to get it cheaper than anywhere else I'm selling it. I currently own a plastic one and have this one more of a display piece. I wouldn't recommend it for physical "use" being vintage and ceramic. Just get the plastic one like I did for use. They have a camera tripod thread at the base for mounting. The ceramic ones are fairly rare and hard to find. This one fell into my lap and I've been smiling ever since...well since kids came along. Message me if you are interested. Every time I look at these pictures I want to keep it.
Sold to a fellow CA.org member. Congrats and post some studies with it.