Here is an image of the missile as it flew:
Here is a drawing with a slimmer booster:
The smaller booster makes sense, given the RIM-50 was supposed to be as or more capable than the RIM-8 Talos but smaller, and able to be fired from the Mk 10 GMLS used by the RIM-2 Terrier. This is seemingly confirmed by Wikipedia: https://en.wikipedia.org/wiki/RIM-50_Typhon , but I the absence of a production version brings my question.
Can anyone confirm which booster would have been used on a production version of the RIM-50?