Matt, sorry you had that run in. I hate it when law enforcement is used for revenue generation.
The props on the production B-32's were all Curtiss Electric. They were also made with hollow steel blades, one of the first uses of that method of blade construction. The inboards were reversible as on the prototype.
Bill, study the hub, it is typically Curtiss , although the blade shape does resemble the Hamilton Standard profile.
We've probably had enough fun with this one. Since Osher didn't weigh in on the "tie breaker", in my vast authority as the Asker Of The Question, I shall award the win to Matt.
Here is a picture of Hobo Queen. It was on the same mission as the B-32 that was attacked, but split off to go to a different photo target before the Zeros and Shidens showed up. Best view of the Curtiss prop hubs.