Bought this AU billon Rappen mostly because of the die crack and missing lettering. As you can see, the n of Canton and ZU of Zurich are absent. The die crack runs where the N of Canton should be. My question is this a grease filled die or broken die. The denticles in the area of the missing lettering look good, so I'm confused. Any help is appreciated.
From what I can see in your photo, I would say your coin was Struck Thru Debris. What looks like a die crack may be the edge of the debris that was stuck to the face of the die. I think photos of the coin outside the Flip would be helpful for a more accurate assessment.
I Never considered that, but the surface of the missing lettering is textured, so I bet you are right! Either way, it's a neat little coin.