I can't help you with identifying them, but I have one similar to the one on the left. It has a few more coils on it, which shortens it about an inch from the one in your photo. Got it for a couple of dollars at a hamfest and thought it might work well on my scanner for VHF high band. It seems to work decently for that. The nice thing about it is that it's much more light weight and less visible than the older magmount that I've been using for years.