I watched "Once upon a time in America" the other day, and man those tuxedos they wore looked good. Without going bespoke or vintage hunting on Ebay and thrift shops, where can one actually find those?
-Generously sized peak lapels (4-4.5" inches it seemed like), with a nice bow/belly to them
-Low-ish button stance
Couldn't find any screencaps from the movie, but something like this: