General White Wall Tires 8.20-15

I have 3 Vintage General White Wall Tires. They have a diamond/box type looking sidewall. The white part is really wide. They have a 3D look to them. I'm not sure what type of vehicle they were on back in the day but they are pretty distinct looking. The tread is fair and I'm not sure if they hold air as they are not mounted on anything. They are used. I will send pictures upon request if provided a number.