For sure a lot depends on how you plan on using the vehicle. If it is truly just a show car, driven very little, then the Classsic Car insurance policies like Grundy or Hagerty are great. If you drive it more, then you might consider getting a standard insurance policy with a Stated or Agreed value. Stated value is OK, but the insurance will pay only up to the vehicles appraised value at the time of the claim. Luckily mine appraised for more than I had "Stated", so I got full value, less deductible. I was advised next time to get it appraised ahead of time, as that would have made things a lot easier. If you can get "Agreed" value insurance, then the Ins Company has agreed in advance what a total loss would be, and they pay out without hassle.
For me, I was able to insure my vehicles with Hartford Ins ( AARP to boot, if you are old enough). I added Comp and Collision to my Elky, with a stated value of $15K, and the cost to insure it with no restrictions, along with our other DD, was less than I was paying with my previous company just for liability.