1975 Nickel Dollar - Die Clashes...?

Hi wert, looks like lathe lines. Is it posible to see the incused sections of the whole coin? It looks like someone was lasy on the old polisher. I bet it's a marker.

By definition, these are not clash marks. Clash marks seen on the reverse, would have to be imparted from design elements on the obverse (e.g., beads, legend or effigy).

Remember, the term die clash refers to the dies coming together in contact with each other, and impart elements of the designs onto each opposite die. This mishap occurs when opposing dies collide with each other when a planchet fails to be fed into the striking chamber. Most complete planchet misfeeds don't result in clashed dies because dies normally don't touch each other in the absence of a planchet. In order for dies to clash, the dies must have fallen out of adjustment so that their minimum clearance is zero (or less than zero).

Clash marks are the impressions left on each die after a clash. Part of the design of each die is transferred to the opposing die when they smack into each other. Remember that the fields are the highest points on the dies, so where you find the clash marks will be where the fields on a given side come in contact with the edges of the incuse design elements. Therefore, any coin that is struck will show extra design elements that are mirror-image. Shallow recesses on the die face (corresponding to low-relief areas on the coin) can also pick up clash marks, the "hearing aid" clashes that you see on George VI coins are examples of this. Deep recesses are generally protected from even the strongest clashes. In modern coins, the periphery of each die face will also be free of clash marks in most instances due to die convexity. Each die face bulges out ever-so-slightly, and the convexity is strongest at the periphery. Since opposing surfaces are curving away from each other, there is little opportunity for contact. In older coins however, you can find clash elements almost right out at the rim. In fact, for some years of the Victorian and Edward series, it is much harder to find a clash-free example than one with a die clash.

The lines in your coin are straight, I would expect lathe lines to be curved. It almost looks like someone, either intentionally or not, took a file to the surface of the die. Those lines are not only straight, but they only appear in the fields (the highest point of the die surface).

cownick

I am going to take a second look at that coin for lines all around....