Fair point Steve.
But AFAIK, whether it's on a classic policy (or not) depends on the individual insurance company. But whatever the age, it can only be on a classic policy when it's used as a second car and has an annual mileage of around 5,000 miles or less.
Mine's 13 next month, and when it's back on the road, it will be a second car, so I'm going to see what I can arrange...