Every company, every policy is different, and different by State.
For example, I have AAA policies on my home and DD F150. I also have a AAA Collector Car policy on my 1957 Ranch Wagon, BUT they will not allow bundling discounts between the policies. Go figure?
AAA promotes their collector insurance program but would not even consider the appraised Agreed Value policy on my restored 1948 Spartan trailer, yet Progressive had no problem underwriting it.
You have to understand the terms used, then go shopping for a policy that fits your actual needs and price range.
John