Count coils in machine. All normal size coils in Bally games are 03-7066 sleeves.
Count drop reset banks in machines. All those coils are 5/8" and use 03-7068 sleeves.
You could look at pics on ipdb before you get them since you don't have the machines yet. It never hurts to have a supply of the 03-7066 sleeves around since they are the most common sleeve.
Luckily in most cases you can play the machine for a while before changing them, unless some knucklehead greased stuff up.