Ive found a few of these but i havent seen a thread on here about trial dies. So probably not that great of an error. This looks like trial dies. Like sun rays.
Is this what you are thinking about? Copy from another site. Trail Die: Generally speaking, trails are parallel raised ridges which extend away from the corners of a coin’s design elements. They are strongest at the point where the device meets the field, and then taper off as they extend into the field. They vary in strength from naked-eye obvious to barely perceptible under magnification. A single coin can exhibit multiple sets of trails going in multiple directions. These ridges are created during polishing of the die by a rotary tool. A soft buff or bristles penetrate into the die’s recesses, gather in the corners of those devices, and then erode a gouge into the die as they exit the recesses into the higher relief of the field. Trails can also occur on a coin’s incuse devices, which are raised on the die. In this instance, the buff or bristle concentrate against the raised wall and gouge out a trail into the field where the device terminates. Since there is no change in relief in this instance, the trails are weaker. Wavy steps are a form of trails. For a more detailed explanation, please see the article “Unraveling the Mysteries of Trail Dies” by Will Brooks in the July 17th 2017 issue of Coinworld Weekly. To see listings of trails, please visit http://www.traildies.com/.
Sorry for the quick post before. I was read another post on another site. they posted about Trail Dies, and I thought oh that is a misprint and not it was not. Then your post today, and I thought does she mean Trail Dies. And now I don't know what it is. I really have not read up on this, but I think it is a fairly new phenomenon in the zinc cent world. Look at the very bottom of website. copyright 2018 by.
your cent looks more like die scrapes or gouges, its not a trail die, here are pics of my trail die nickel, big difference.. http://www.traildies.com/
The reverse of your coin is exhibiting planchet striations. These are created during manufacturing of the zinc stock, presumably by the rolling mill. I have just finished an article on this awaiting publishing. These are not trails.
