I'm pretty sure that this has come up before, but I can't find any reference to it here already...

In the scene where Frank Pentangeli visits the Rosato brothers at their bar, Carmine Rosato meets Frankie at the front door with a hundred dollar bill. When Pentangeli asks what it means, Carmine replies: "It's a lucky C note for our new deal." Frank then tells him that he doesn't like it; that he takes it as an insult...just before one of the other Rosatos strangles him.

The "lucky C note" obviously has some sort of symbolic significance...that has gone completely over my head; something no doubt rooted in Mafia culture and custom.

What is it? What does the "lucky C note" mean?

~ Q