In this case, the area involved in the break is only the edge of the coin. I think it appropriate to specify that the most engraved part of the die is the "gutter" which constitutes the edge, which is why it is the weakest point of the coin. Therefore, this type of defect is common. The rim die break (E.C.45) is sometimes confused with the marginal die break (E.C.46). This happens in cases of breakage in which the field and the incisions adjacent to the gutter of the coin are compromised. It is a small difference that you need to know in order to be able to correctly divide each type of minting break.