[Oldsguy]

A little more on the history. In the 1940 Olds started describing model size and engine size by two numbers which became the model number. It goes like this. At the beginnning they had a sixty series (small), seventy series (larger), and ninety series (largest). I don't think the sixty series lasted very long, maybe for six years 1940,'41,46,'47,'48 and '49. The second number of the model denoted the engine a straight six or staight eight. So a model 66 was the smallest and in the beginning usually the most basic with a straight six in it. and a model 98 would have been the largest car with a straight eight in it and probably could have been optioned out the most. In 1949 olds introduce their V8 engine, dropped the sixty series and inserted the eighty series. I don't think the seventy series lasted too long after that and in the fifties you had the 88 models and the 98 models as they almost exclusively used the V8 then. Now, since there were only two models they started to offer more options to differentiate between them and allow more choice for the customer. A little later they started adding names to the 88 series like Delta, Delmont, Holiday, Super, Golden and others that denoted option packages. So, your Super 88 was described this way in one of my references.
"The middle Oldsmobile series was the popular Super Eighty-Eight. Wheelbase and body shells were shared with the Golden Rocket Eighty-Eights. Six body styles were offered including the newly returned station wagon. Standard equipment included all items from the Golden Rocket Eighty-Eight plus front fender chrome script, exposed chorme roof bows and side intereior courtesy lights. A variety of colored cloth and leather upholstery copmbination could be oreder......."