Do any struck through errors show on both sides of a coin? Let us say that the object in between has more width than the planchet. What happens and what would the struck coin look like?
Are you referring to this type? Struck through grease on both sides of the Louisiana state quarter. https://coins.ha.com/itm/errors/200...-obv-and-rev-struck-thru-ngc/a/131325-22917.s
I mean struck through only one object where the strike through is visible on both sides of the coin. So something like a hard piece of debris rather than grease.
I could be wrong but I think that the tolerances of the dies in relationship to their distancing would preclude this from happening in the normal course of striking. However, a major "event" like a shattered die "might" allow this to happen. I would defer to @Fred Weinberg to let us know if he has ever seen anything like this happen to any of the coins he has come across. I also believe that screws, nuts and bolts are a rare occurrence and some possibly man made errors.
Interestingly, just within the last few days, I did see a slabbed coin (identified as a strike through) which had a very thin white plastic material wrapped around the obverse, edge, & reverse. Unfortunately, while it did pique my interest, & I took a moment to look at a close up (it did look genuine), I was not interested enough to record/remember the TPG or denomination. However, I did see it on FleeceBay.
Yes, there are numerous coins with struck thru's on both sides of the coin. Usually, it's on one die or the other, but it can transfer or get filled on both in some cases. State/Park Quarters and early Presidential dollars are common with struck thru grease on both sides.
I know that grease strike throughs can appear on both sides. But I think what is being addressed by the OP is, can a piece of metal say, be struck through on one side with enough pressure for that same piece to show on the opposite side?
If that was the question then the answer is no - I've never seen such a coin. If a thicker, strong, object was struck thru either die, the other side -might- show a flattening area on the opposite side, but not the object itself.
Yes, tommyc03 clarified the question. Thank you all! I assumed it was extremely rare, unheard of, or impossible. Fred, is it something like the die steel or planchet is too hard for an object to pierce through the planchet completely?
Usually a struck through is on one side or the other but there are numerous coins where the struck through affects both sides of the coin. However the item causing the strike through only appears on one side and the other side is flat or dull like a piece of metal. But on could have a thread on one side and a small piece of metal on the other side.
Not 100% sure. I’ve heard they’re from brushes mint employees use to clean the machines but really don’t know.