I just stumbled on these pics of an old Sunoco blended gas pump. I remember bitching that 260 (102 octane was 72 a gallon!
https://encrypted-tbn3.gstatic.com/...t25QkyPWYA9xCrwiY1eJBkBKs2QQmZ8stmueS641HwRIQ
https://encrypted-tbn0.gstatic.com/...zRLS_30r8HW_WtOkHVZw_6Xeyye42yU6-QgObyAjtrrOs
https://encrypted-tbn3.gstatic.com/...t25QkyPWYA9xCrwiY1eJBkBKs2QQmZ8stmueS641HwRIQ
https://encrypted-tbn0.gstatic.com/...zRLS_30r8HW_WtOkHVZw_6Xeyye42yU6-QgObyAjtrrOs