You won't. Model numbers were not created until LONG ater your revolver was made.
How about telling us a bit about the revolver? There were tope break, and swing out cylinder models. If a swing out, it MIGHT be a .32 hand Ejector Model- something like this:
click the pic to enlarge
Posting a photo of YOUR revolver would help a lot, also.
And excuse me- where ARE my manners- welcome to the forum. When you get a minute, stop over by the intro thread and say howdy.