I'm very happy with Eastern Insurance Group. Mr. Jack Richardson may be reached at: jrichardson@historicfirearms.com or if you prefer to talk to him to get started, 800-545-9326 X59398. I found their rates and listing process to be very, very good. I'm on my second policy with them.

As far as valuation, search for similar guns on Guns Internation to get a ball park idea, although you have some very fine guns there, which may be out of the norm in some instances.
V/r
Maxey