I use Hagerty. They are Agreed Value. I sent them a couple of pictures of each bike, I told them what I thought they were worth and they insured them for that. I have my rat bike insured for $4000 and my restored bikes for $6000. When I have sold my bikes, they usually ask how much I sold for. They use this info to keep a database on current values.
When using a regular insurance company, good luck getting paid in the event of a loss.
I would bet that if something happens to PD’s bike, State Farm would pay out Actual Cash Value, which is likely $100 or so.