Hopefully my last question about options on STIRs... When I did some work last time (before this week) about 20 years ago, I think (I may remember incorrectly) that I was using Black76 but without discounting the premium and the reason was that the premium isn't paid today but as it is a margined in...

Not sure if this question deserves a new thread, but as it is connected to this one, I'll ask here for now. Just as MaxwellSheffield did, I also would like to have an idea about the correctness of the pricing for an option on a STIR futures. To make the example concrete, let's say the call@96.75 on ...