1959 Ford Fairlane 500 - Good Antique Car Insurance?

I currently drive a 1959 Ford Fairlane 500, it's under an Antique License Plate in Texas and I often drive it to the local parades and shows, and sometimes to the high school during major events. She runs and drives beautifully, I've put money into it to make sure that it's daily-driver-quality.

I bought it pretty recently, though most local insurance companies can't cover it as they have no way to place a value on the vehicle due to its age. What's a good company for insuring antique cars?

I don't need full coverage, just liability.